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<!--XBRL Document Created with the Workiva Platform-->
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    <link:label id="lab_abvx_EmissionDeBonsDeSouscriptionDactions_019b36d3-2ad4-764d-b88d-ce66c7680692_label_en" xlink:label="lab_abvx_EmissionDeBonsDeSouscriptionDactions" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Issue of share warrants</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_abvx_EmissionDeBonsDeSouscriptionDactions" xlink:href="abvx-2025-12-31.xsd#abvx_EmissionDeBonsDeSouscriptionDactions"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_abvx_EmissionDeBonsDeSouscriptionDactions" xlink:to="lab_abvx_EmissionDeBonsDeSouscriptionDactions" xlink:type="arc" order="1"/>
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    <link:loc xlink:type="locator" xlink:label="loc_abvx_ExercicesDeBonsDeSouscriptionDactions" xlink:href="abvx-2025-12-31.xsd#abvx_ExercicesDeBonsDeSouscriptionDactions"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_abvx_ExercicesDeBonsDeSouscriptionDactions" xlink:to="lab_abvx_ExercicesDeBonsDeSouscriptionDactions" xlink:type="arc" order="1"/>
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    <link:label id="lab_abvx_AugmentationDiminutionDuNombreDactionsEmisesGraceALexerciceDeBonsDeSouscriptionDactionsKreos_019b36d3-2ad4-7b7e-bf63-89acd2b4f152_documentation_en" xlink:label="lab_abvx_AugmentationDiminutionDuNombreDactionsEmisesGraceALexerciceDeBonsDeSouscriptionDactionsKreos" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">Increase Decrease In Number Of Shares Issued Through Exercise Of Share Warrants</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_abvx_AugmentationDiminutionDuNombreDactionsEmisesGraceALexerciceDeBonsDeSouscriptionDactionsKreos" xlink:href="abvx-2025-12-31.xsd#abvx_AugmentationDiminutionDuNombreDactionsEmisesGraceALexerciceDeBonsDeSouscriptionDactionsKreos"/>
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    <link:label id="lab_abvx_CurrentReceivablesAndCurrentPrepaidExpenses_019b36d3-2ad4-7ef8-a702-412113c561ed_label_en" xlink:label="lab_abvx_CurrentReceivablesAndCurrentPrepaidExpenses" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Current receivables and current prepaid expenses</link:label>
    <link:label id="lab_abvx_CurrentReceivablesAndCurrentPrepaidExpenses_019b36d3-2ad4-74cb-ae2c-60acff461d4c_documentation_en" xlink:label="lab_abvx_CurrentReceivablesAndCurrentPrepaidExpenses" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">Current receivables and current prepaid expenses</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_abvx_CurrentReceivablesAndCurrentPrepaidExpenses" xlink:href="abvx-2025-12-31.xsd#abvx_CurrentReceivablesAndCurrentPrepaidExpenses"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_abvx_CurrentReceivablesAndCurrentPrepaidExpenses" xlink:to="lab_abvx_CurrentReceivablesAndCurrentPrepaidExpenses" xlink:type="arc" order="1"/>
    <link:label id="lab_abvx_AjustementsPourRemboursementDesAvancesConditionnellesBpifrance_019b36d3-2ad4-711c-8851-e878dfc970fa_label_en" xlink:label="lab_abvx_AjustementsPourRemboursementDesAvancesConditionnellesBpifrance" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Adjustments For Redemption Of Bpifrance Conditional Advances</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_abvx_AjustementsPourRemboursementDesAvancesConditionnellesBpifrance" xlink:href="abvx-2025-12-31.xsd#abvx_AjustementsPourRemboursementDesAvancesConditionnellesBpifrance"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_abvx_AjustementsPourRemboursementDesAvancesConditionnellesBpifrance" xlink:to="lab_abvx_AjustementsPourRemboursementDesAvancesConditionnellesBpifrance" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ProfitLossAttributableToOwnersOfParent_019b36d3-2ad4-7634-8b78-6e6772b133d2_totalLabel_en" xlink:label="lab_ifrs-full_ProfitLossAttributableToOwnersOfParent" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en">Profit (loss), attributable to owners of parent</link:label>
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    <link:label id="lab_abvx_ProduitsDeLemissionDactionsAutresQueParLexerciceDeBonsDeSouscription_019b36d3-2ad4-7c8c-9610-c4ad4d798a74_label_en" xlink:label="lab_abvx_ProduitsDeLemissionDactionsAutresQueParLexerciceDeBonsDeSouscription" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Proceeds From Issuing Shares Other Than Through Exercise Of Warrants</link:label>
    <link:label id="lab_abvx_ProduitsDeLemissionDactionsAutresQueParLexerciceDeBonsDeSouscription_019b36d3-2ad4-7fb3-90da-2ba282f3eee3_documentation_en" xlink:label="lab_abvx_ProduitsDeLemissionDactionsAutresQueParLexerciceDeBonsDeSouscription" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">Proceeds From Issuing Shares Other Than Through Exercise Of Warrants</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_abvx_ProduitsDeLemissionDactionsAutresQueParLexerciceDeBonsDeSouscription" xlink:href="abvx-2025-12-31.xsd#abvx_ProduitsDeLemissionDactionsAutresQueParLexerciceDeBonsDeSouscription"/>
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    <link:label id="lab_ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities_019b36d3-2ad4-7add-94dd-a313587c2c3b_negatedLabel_en" xlink:label="lab_ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Payments of lease liabilities, classified as financing activities</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities" xlink:to="lab_ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_abvx_RepaymentsOfConvertibleLoanNotes_019b36d3-2ad4-7f18-bab4-2f776f8c69ed_negatedLabel_en" xlink:label="lab_abvx_RepaymentsOfConvertibleLoanNotes" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Repayments of convertible loan notes</link:label>
    <link:label id="lab_abvx_RepaymentsOfConvertibleLoanNotes_019b36d3-2ad4-79cc-94ca-e6595c9d011e_label_en" xlink:label="lab_abvx_RepaymentsOfConvertibleLoanNotes" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Repayments of convertible loan notes</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_abvx_RepaymentsOfConvertibleLoanNotes" xlink:href="abvx-2025-12-31.xsd#abvx_RepaymentsOfConvertibleLoanNotes"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_abvx_RepaymentsOfConvertibleLoanNotes" xlink:to="lab_abvx_RepaymentsOfConvertibleLoanNotes" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInFinancingActivities_019b36d3-2ad4-7eb1-a7ff-5fca046060ec_totalLabel_en" xlink:label="lab_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en">Cash flows from (used in) financing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CashFlowsFromUsedInFinancingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:to="lab_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_abvx_AugmentationDiminutionDuNombreDactionsEmisesGraceALemissionDactionsGratuites_019b36d3-2ad4-7ad2-82ac-32f73155ee63_label_en" xlink:label="lab_abvx_AugmentationDiminutionDuNombreDactionsEmisesGraceALemissionDactionsGratuites" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Increase Decrease In Number Of Shares Issued Through Issue of free shares</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_abvx_AugmentationDiminutionDuNombreDactionsEmisesGraceALemissionDactionsGratuites" xlink:href="abvx-2025-12-31.xsd#abvx_AugmentationDiminutionDuNombreDactionsEmisesGraceALemissionDactionsGratuites"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_abvx_AugmentationDiminutionDuNombreDactionsEmisesGraceALemissionDactionsGratuites" xlink:to="lab_abvx_AugmentationDiminutionDuNombreDactionsEmisesGraceALemissionDactionsGratuites" xlink:type="arc" order="1"/>
    <link:label id="lab_abvx_AjustementsAuTitreDeLaDesactualisationLieAuxAvancesConditionnelles_019b36d3-2ad4-77c3-aeb0-dabc003aa142_label_en" xlink:label="lab_abvx_AjustementsAuTitreDeLaDesactualisationLieAuxAvancesConditionnelles" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Adjustments For Unwinding Of Discount Related To Conditional Advances</link:label>
    <link:label id="lab_abvx_AjustementsAuTitreDeLaDesactualisationLieAuxAvancesConditionnelles_019b36d3-2ad4-7e4d-9ab3-f49274084105_documentation_en" xlink:label="lab_abvx_AjustementsAuTitreDeLaDesactualisationLieAuxAvancesConditionnelles" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">Adjustments For Unwinding Of Discount Related To Conditional Advances</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_abvx_AjustementsAuTitreDeLaDesactualisationLieAuxAvancesConditionnelles" xlink:href="abvx-2025-12-31.xsd#abvx_AjustementsAuTitreDeLaDesactualisationLieAuxAvancesConditionnelles"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_abvx_AjustementsAuTitreDeLaDesactualisationLieAuxAvancesConditionnelles" xlink:to="lab_abvx_AjustementsAuTitreDeLaDesactualisationLieAuxAvancesConditionnelles" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInInvestingActivities_019b36d3-2ad4-7133-bb4e-4f83f2a4346c_totalLabel_en" xlink:label="lab_ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en">Cash flows from (used in) investing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CashFlowsFromUsedInInvestingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:to="lab_ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_abvx_ExercicesDeBonsDeSouscriptionDactionsKreos_019b36d3-2ad4-7fe8-b07d-f72ecd8c2e83_label_en" xlink:label="lab_abvx_ExercicesDeBonsDeSouscriptionDactionsKreos" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Exercises Of Share Warrants Other Than through The Equity Line Agreement</link:label>
    <link:label id="lab_abvx_ExercicesDeBonsDeSouscriptionDactionsKreos_019b36d3-2ad4-7523-9336-5f7729a61e8e_documentation_en" xlink:label="lab_abvx_ExercicesDeBonsDeSouscriptionDactionsKreos" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">Exercises Of Share Warrants KREOS</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_abvx_ExercicesDeBonsDeSouscriptionDactionsKreos" xlink:href="abvx-2025-12-31.xsd#abvx_ExercicesDeBonsDeSouscriptionDactionsKreos"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_abvx_ExercicesDeBonsDeSouscriptionDactionsKreos" xlink:to="lab_abvx_ExercicesDeBonsDeSouscriptionDactionsKreos" xlink:type="arc" order="1"/>
    <link:label id="lab_abvx_ProduitsNetDesObligationsConvertibles_019b36d3-2ad4-7f40-b912-6195b518afbc_label_en" xlink:label="lab_abvx_ProduitsNetDesObligationsConvertibles" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Net proceeds from the issuance of convertible bond loans</link:label>
    <link:label id="lab_abvx_ProduitsNetDesObligationsConvertibles_019c6ff8-7483-7019-8a71-19a11fb7a5ce_documentation_en" xlink:label="lab_abvx_ProduitsNetDesObligationsConvertibles" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">Net proceeds from the issuance of convertible bond loans</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_abvx_ProduitsNetDesObligationsConvertibles" xlink:href="abvx-2025-12-31.xsd#abvx_ProduitsNetDesObligationsConvertibles"/>
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    <link:label id="lab_abvx_NonCurrentPortionOfNonCurrentLoansReceivedExcludingRoyaltyCertificatesBondsOtherThanConvertibleNotesAndLeaseLiabilities_019b36d3-2ad4-7c39-aa32-37b8d6152a86_label_en" xlink:label="lab_abvx_NonCurrentPortionOfNonCurrentLoansReceivedExcludingRoyaltyCertificatesBondsOtherThanConvertibleNotesAndLeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Non current portion of non current loans received, excluding royalty certificates, bonds other than convertible notes and lease liabilities</link:label>
    <link:label id="lab_abvx_NonCurrentPortionOfNonCurrentLoansReceivedExcludingRoyaltyCertificatesBondsOtherThanConvertibleNotesAndLeaseLiabilities_019b36d3-2ad4-73dd-a711-7cf707f2b053_documentation_en" xlink:label="lab_abvx_NonCurrentPortionOfNonCurrentLoansReceivedExcludingRoyaltyCertificatesBondsOtherThanConvertibleNotesAndLeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">Non current portion of non current loans received, excluding royalty certificates, bonds other than convertible notes and lease liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_abvx_NonCurrentPortionOfNonCurrentLoansReceivedExcludingRoyaltyCertificatesBondsOtherThanConvertibleNotesAndLeaseLiabilities" xlink:href="abvx-2025-12-31.xsd#abvx_NonCurrentPortionOfNonCurrentLoansReceivedExcludingRoyaltyCertificatesBondsOtherThanConvertibleNotesAndLeaseLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_abvx_NonCurrentPortionOfNonCurrentLoansReceivedExcludingRoyaltyCertificatesBondsOtherThanConvertibleNotesAndLeaseLiabilities" xlink:to="lab_abvx_NonCurrentPortionOfNonCurrentLoansReceivedExcludingRoyaltyCertificatesBondsOtherThanConvertibleNotesAndLeaseLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_abvx_PaiementsPourLesDepots_019b36d3-2ad4-7c10-92b9-8b5b903d8972_negatedLabel_en" xlink:label="lab_abvx_PaiementsPourLesDepots" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Reimbursements Of Deposits</link:label>
    <link:label id="lab_abvx_PaiementsPourLesDepots_019b36d3-2ad4-774b-8ed5-49643778eef5_label_en" xlink:label="lab_abvx_PaiementsPourLesDepots" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Reimbursements Of Deposits</link:label>
    <link:label id="lab_abvx_PaiementsPourLesDepots_019b36d3-2ad4-7d46-bfd6-2143b82bcfec_documentation_en" xlink:label="lab_abvx_PaiementsPourLesDepots" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">Payments For Deposits</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_abvx_PaiementsPourLesDepots" xlink:href="abvx-2025-12-31.xsd#abvx_PaiementsPourLesDepots"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_abvx_PaiementsPourLesDepots" xlink:to="lab_abvx_PaiementsPourLesDepots" xlink:type="arc" order="1"/>
    <link:label id="lab_abvx_ConversionDesOCABSAKreosClaret_019c7672-8b81-73b7-b1f3-4d9dc679fb4e_label_en" xlink:label="lab_abvx_ConversionDesOCABSAKreosClaret" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Conversion of the Kreos Claret OCABSA</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_abvx_ConversionDesOCABSAKreosClaret" xlink:href="abvx-2025-12-31.xsd#abvx_ConversionDesOCABSAKreosClaret"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_abvx_ConversionDesOCABSAKreosClaret" xlink:to="lab_abvx_ConversionDesOCABSAKreosClaret" xlink:type="arc" order="1"/>
    <link:label id="lab_abvx_AvancesAuxCRO_019b36d3-2ad4-70b1-961a-69de47a91538_negatedLabel_en" xlink:label="lab_abvx_AvancesAuxCRO" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Purchase of other long-term assets, classified as investing activities</link:label>
    <link:label id="lab_abvx_AvancesAuxCRO_019b36d3-2ad4-72df-b1fd-250112a9453e_label_en" xlink:label="lab_abvx_AvancesAuxCRO" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Cash Advances And Loans Made To CRO</link:label>
    <link:label id="lab_abvx_AvancesAuxCRO_019b36d3-2ad4-7c8c-a7da-9ccf41c72fb0_documentation_en" xlink:label="lab_abvx_AvancesAuxCRO" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">Cash Advances And Loans Made To CRO</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_abvx_AvancesAuxCRO" xlink:href="abvx-2025-12-31.xsd#abvx_AvancesAuxCRO"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_abvx_AvancesAuxCRO" xlink:to="lab_abvx_AvancesAuxCRO" xlink:type="arc" order="1"/>
    <link:label id="lab_abvx_AugmentationDiminutionDuNombreDactionsEmisesGraceALexerciceDeBonsDeSouscriptionDactionsAutresQueKreos_019c7baa-dec9-7a5d-b848-08fc1deb5b72_label_en" xlink:label="lab_abvx_AugmentationDiminutionDuNombreDactionsEmisesGraceALexerciceDeBonsDeSouscriptionDactionsAutresQueKreos" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Increase Decrease In Number Of Shares Issued Through Exercise Of Share Warrants Other Than Kreos</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_abvx_AugmentationDiminutionDuNombreDactionsEmisesGraceALexerciceDeBonsDeSouscriptionDactionsAutresQueKreos" xlink:href="abvx-2025-12-31.xsd#abvx_AugmentationDiminutionDuNombreDactionsEmisesGraceALexerciceDeBonsDeSouscriptionDactionsAutresQueKreos"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_abvx_AugmentationDiminutionDuNombreDactionsEmisesGraceALexerciceDeBonsDeSouscriptionDactionsAutresQueKreos" xlink:to="lab_abvx_AugmentationDiminutionDuNombreDactionsEmisesGraceALexerciceDeBonsDeSouscriptionDactionsAutresQueKreos" xlink:type="arc" order="1"/>
    <link:label id="lab_abvx_ExerciceDeBonsDeSouscriptionDactionsKreosClaret_019b36d3-2ad4-7621-8a1e-420c7a723651_label_en" xlink:label="lab_abvx_ExerciceDeBonsDeSouscriptionDactionsKreosClaret" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Exercises Of Share Warrants KREOS/ Claret</link:label>
    <link:label id="lab_abvx_ExerciceDeBonsDeSouscriptionDactionsKreosClaret_019b36d3-2ad4-7ef5-a7ea-b581e1ad2f7b_documentation_en" xlink:label="lab_abvx_ExerciceDeBonsDeSouscriptionDactionsKreosClaret" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">Exercises Of Share Warrants KREOS / Claret</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_abvx_ExerciceDeBonsDeSouscriptionDactionsKreosClaret" xlink:href="abvx-2025-12-31.xsd#abvx_ExerciceDeBonsDeSouscriptionDactionsKreosClaret"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_abvx_ExerciceDeBonsDeSouscriptionDactionsKreosClaret" xlink:to="lab_abvx_ExerciceDeBonsDeSouscriptionDactionsKreosClaret" xlink:type="arc" order="1"/>
    <link:label id="lab_abvx_ConversionDeLempruntObligataireHeights_019c7673-0653-7aa8-beb1-9b93350df8cd_label_en" xlink:label="lab_abvx_ConversionDeLempruntObligataireHeights" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Conversion of the Heights notes</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_abvx_ConversionDeLempruntObligataireHeights" xlink:href="abvx-2025-12-31.xsd#abvx_ConversionDeLempruntObligataireHeights"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_abvx_ConversionDeLempruntObligataireHeights" xlink:to="lab_abvx_ConversionDeLempruntObligataireHeights" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInOperatingActivities_019b36d3-2ad4-79b0-8124-6faa0f82947b_totalLabel_en" xlink:label="lab_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en">Cash flows from (used in) operating activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CashFlowsFromUsedInOperatingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="lab_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_abvx_RemboursementsDobligationsNonConvertibles_019cd703-f731-7cca-855d-e3268e43e2f6_label_en" xlink:label="lab_abvx_RemboursementsDobligationsNonConvertibles" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Repayments of non convertible loan notes</link:label>
    <link:label id="lab_abvx_RemboursementsDobligationsNonConvertibles_019c6db5-a2fd-7778-856e-e91690b7de00_documentation_en" xlink:label="lab_abvx_RemboursementsDobligationsNonConvertibles" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">Repayments of non‑convertible bonds</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_abvx_RemboursementsDobligationsNonConvertibles" xlink:href="abvx-2025-12-31.xsd#abvx_RemboursementsDobligationsNonConvertibles"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_abvx_RemboursementsDobligationsNonConvertibles" xlink:to="lab_abvx_RemboursementsDobligationsNonConvertibles" xlink:type="arc" order="1"/>
    <link:label id="lab_abvx_NonCurrentConvertibleLoanNotes_019b36d3-2ad4-710f-835e-4180993d6231_label_en" xlink:label="lab_abvx_NonCurrentConvertibleLoanNotes" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Non current convertible loan notes</link:label>
    <link:label id="lab_abvx_NonCurrentConvertibleLoanNotes_019b36d3-2ad4-7d05-8d3a-86ee13201806_documentation_en" xlink:label="lab_abvx_NonCurrentConvertibleLoanNotes" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">Non current convertible loan notes</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_abvx_NonCurrentConvertibleLoanNotes" xlink:href="abvx-2025-12-31.xsd#abvx_NonCurrentConvertibleLoanNotes"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_abvx_NonCurrentConvertibleLoanNotes" xlink:to="lab_abvx_NonCurrentConvertibleLoanNotes" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_RevenueAndOperatingIncome_019b36d3-2ad4-714e-8c14-60cb1053a785_totalLabel_en" xlink:label="lab_ifrs-full_RevenueAndOperatingIncome" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en">Revenue and other operating income</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RevenueAndOperatingIncome" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_RevenueAndOperatingIncome"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_RevenueAndOperatingIncome" xlink:to="lab_ifrs-full_RevenueAndOperatingIncome" xlink:type="arc" order="1"/>
    <link:label id="lab_abvx_VariationDeLaTresorerieAbstract_019b36d3-2ad4-76c8-8b43-579ff9045efb_label_en" xlink:label="lab_abvx_VariationDeLaTresorerieAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Cash flows [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_abvx_VariationDeLaTresorerieAbstract" xlink:href="abvx-2025-12-31.xsd#abvx_VariationDeLaTresorerieAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_abvx_VariationDeLaTresorerieAbstract" xlink:to="lab_abvx_VariationDeLaTresorerieAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_OperatingExpense_019b36d3-2ad4-76d5-9465-e23d2b4396ca_negatedTotalLabel_en" xlink:label="lab_ifrs-full_OperatingExpense" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="resource" xml:lang="en">Operating expense</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OperatingExpense" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OperatingExpense"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_OperatingExpense" xlink:to="lab_ifrs-full_OperatingExpense" xlink:type="arc" order="1"/>
    <link:label id="lab_abvx_EmissionDactionsGratuites_019b36d3-2ad4-71ca-a055-d62049986524_label_en" xlink:label="lab_abvx_EmissionDactionsGratuites" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Issue of free shares</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_abvx_EmissionDactionsGratuites" xlink:href="abvx-2025-12-31.xsd#abvx_EmissionDactionsGratuites"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_abvx_EmissionDactionsGratuites" xlink:to="lab_abvx_EmissionDactionsGratuites" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_NumberOfSharesIssued_019b36d3-2ad4-7997-872d-e68a253e0e2c_periodStartLabel_en" xlink:label="lab_ifrs-full_NumberOfSharesIssued" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en">Number of shares issued</link:label>
    <link:label id="lab_ifrs-full_NumberOfSharesIssued_019b36d3-2ad4-7881-a905-a5fd4b37f156_periodEndLabel_en" xlink:label="lab_ifrs-full_NumberOfSharesIssued" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en">Number of shares issued</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NumberOfSharesIssued" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_NumberOfSharesIssued"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NumberOfSharesIssued" xlink:to="lab_ifrs-full_NumberOfSharesIssued" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_FinanceIncomeCost_019b36d3-2ad4-7922-9bb5-a6da37a6e2c5_totalLabel_en" xlink:label="lab_ifrs-full_FinanceIncomeCost" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en">Finance income (cost)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinanceIncomeCost" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_FinanceIncomeCost"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_FinanceIncomeCost" xlink:to="lab_ifrs-full_FinanceIncomeCost" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_IncomeTaxExpenseContinuingOperations_019b36d3-2ad4-736e-b7ff-4f24944208e7_negatedLabel_en" xlink:label="lab_ifrs-full_IncomeTaxExpenseContinuingOperations" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Tax expense (income)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncomeTaxExpenseContinuingOperations" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_IncomeTaxExpenseContinuingOperations"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_IncomeTaxExpenseContinuingOperations" xlink:to="lab_ifrs-full_IncomeTaxExpenseContinuingOperations" xlink:type="arc" order="1"/>
    <link:label id="lab_abvx_PartieCouranteDePretsPercusDobligationsEmisesAutresQueDesObligationsConvertiblesEtDePassifsAuTitreDeContratsDeLocation_019b36d3-2ad4-77ba-944e-2c6f02c43e6f_label_en" xlink:label="lab_abvx_PartieCouranteDePretsPercusDobligationsEmisesAutresQueDesObligationsConvertiblesEtDePassifsAuTitreDeContratsDeLocation" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Current portion of non current loans received bonds other than convertible notes and lease liabilities</link:label>
    <link:label id="lab_abvx_PartieCouranteDePretsPercusDobligationsEmisesAutresQueDesObligationsConvertiblesEtDePassifsAuTitreDeContratsDeLocation_019b36d3-2ad4-713f-a10f-ccc861699b24_documentation_en" xlink:label="lab_abvx_PartieCouranteDePretsPercusDobligationsEmisesAutresQueDesObligationsConvertiblesEtDePassifsAuTitreDeContratsDeLocation" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">Current portion of non current loans received bonds other than convertible notes and lease liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_abvx_PartieCouranteDePretsPercusDobligationsEmisesAutresQueDesObligationsConvertiblesEtDePassifsAuTitreDeContratsDeLocation" xlink:href="abvx-2025-12-31.xsd#abvx_PartieCouranteDePretsPercusDobligationsEmisesAutresQueDesObligationsConvertiblesEtDePassifsAuTitreDeContratsDeLocation"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_abvx_PartieCouranteDePretsPercusDobligationsEmisesAutresQueDesObligationsConvertiblesEtDePassifsAuTitreDeContratsDeLocation" xlink:to="lab_abvx_PartieCouranteDePretsPercusDobligationsEmisesAutresQueDesObligationsConvertiblesEtDePassifsAuTitreDeContratsDeLocation" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents_019b36d3-2ad4-7301-91a9-0fa5cb4636c4_totalLabel_en" xlink:label="lab_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en">Increase (decrease) in cash and cash equivalents after effect of exchange rate changes</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_IncreaseDecreaseInCashAndCashEquivalents"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:to="lab_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents" xlink:type="arc" order="1"/>
    <link:label id="lab_abvx_AugmentationDiminutionDuNombreDactionsEmisesGraceALexerciceDeBonsDeSouscriptionDactionsKreosClaret_019b36d3-2ad4-7dc0-b366-e19a7d5e5f1e_label_en" xlink:label="lab_abvx_AugmentationDiminutionDuNombreDactionsEmisesGraceALexerciceDeBonsDeSouscriptionDactionsKreosClaret" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Increase Decrease In Number Of Shares Issued Through Exercise Of Kreos Claret Share Warrants</link:label>
    <link:label id="lab_abvx_AugmentationDiminutionDuNombreDactionsEmisesGraceALexerciceDeBonsDeSouscriptionDactionsKreosClaret_019b36d3-2ad4-72d9-a77d-c79179ed8ba0_documentation_en" xlink:label="lab_abvx_AugmentationDiminutionDuNombreDactionsEmisesGraceALexerciceDeBonsDeSouscriptionDactionsKreosClaret" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">Increase Decrease In Number Of Shares Issued Through Exercise Of Kreos Claret Share Warrants</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_abvx_AugmentationDiminutionDuNombreDactionsEmisesGraceALexerciceDeBonsDeSouscriptionDactionsKreosClaret" xlink:href="abvx-2025-12-31.xsd#abvx_AugmentationDiminutionDuNombreDactionsEmisesGraceALexerciceDeBonsDeSouscriptionDactionsKreosClaret"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_abvx_AugmentationDiminutionDuNombreDactionsEmisesGraceALexerciceDeBonsDeSouscriptionDactionsKreosClaret" xlink:to="lab_abvx_AugmentationDiminutionDuNombreDactionsEmisesGraceALexerciceDeBonsDeSouscriptionDactionsKreosClaret" xlink:type="arc" order="1"/>
    <link:label id="lab_abvx_AugmentationDiminutionDuNombreDactionsEmisesGraceALexerciceDeBonsDeSouscriptionDactions_019b36d3-2ad4-7352-8898-ea11395f3d82_label_en" xlink:label="lab_abvx_AugmentationDiminutionDuNombreDactionsEmisesGraceALexerciceDeBonsDeSouscriptionDactions" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Increase Decrease In Number Of Shares Issued Through Exercise Of Share Warrants</link:label>
    <link:label id="lab_abvx_AugmentationDiminutionDuNombreDactionsEmisesGraceALexerciceDeBonsDeSouscriptionDactions_019b36d3-2ad4-74ec-9962-3c87023e4459_documentation_en" xlink:label="lab_abvx_AugmentationDiminutionDuNombreDactionsEmisesGraceALexerciceDeBonsDeSouscriptionDactions" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">Increase Decrease In Number Of Shares Issued Through Exercise Of Share Warrants</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_abvx_AugmentationDiminutionDuNombreDactionsEmisesGraceALexerciceDeBonsDeSouscriptionDactions" xlink:href="abvx-2025-12-31.xsd#abvx_AugmentationDiminutionDuNombreDactionsEmisesGraceALexerciceDeBonsDeSouscriptionDactions"/>
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    <link:label id="lab_ifrs-full_IncreaseDecreaseInWorkingCapital_019b36d3-2ad4-7deb-b840-92936688eb66_negatedTotalLabel_en" xlink:label="lab_ifrs-full_IncreaseDecreaseInWorkingCapital" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="resource" xml:lang="en">Increase (decrease) in working capital</link:label>
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    <link:label id="lab_abvx_AugmentationDiminutionDuNombreDactionsEmisesGraceALaConversionDeLempruntObligataireHeights_019c7bae-0b85-736f-8a9f-eb8d5cb9abec_label_en" xlink:label="lab_abvx_AugmentationDiminutionDuNombreDactionsEmisesGraceALaConversionDeLempruntObligataireHeights" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Increase Decrease In Number Of Shares Issued Through Conversion of the Heights notes</link:label>
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    <link:label id="lab_abvx_ReevaluationDesEquivalentsDeTresorerieEvaluesALaJusteValeur_019c76bb-3631-738b-a9f1-1ad544c6dc68_label_en" xlink:label="lab_abvx_ReevaluationDesEquivalentsDeTresorerieEvaluesALaJusteValeur" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Revaluation of cash equivalents measured at fair value</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_abvx_ReevaluationDesEquivalentsDeTresorerieEvaluesALaJusteValeur" xlink:href="abvx-2025-12-31.xsd#abvx_ReevaluationDesEquivalentsDeTresorerieEvaluesALaJusteValeur"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_abvx_ReevaluationDesEquivalentsDeTresorerieEvaluesALaJusteValeur" xlink:to="lab_abvx_ReevaluationDesEquivalentsDeTresorerieEvaluesALaJusteValeur" xlink:type="arc" order="1"/>
    <link:label id="lab_abvx_ProduitNetDesObligationsNonConvertibles_019c714b-5273-7647-a6e4-8f92b10c283d_label_en" xlink:label="lab_abvx_ProduitNetDesObligationsNonConvertibles" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Net proceeds from the issuance of non-convertible bond loans</link:label>
    <link:label id="lab_abvx_ProduitNetDesObligationsNonConvertibles_019c7053-2ce0-7c17-a2e8-a62d3b332660_documentation_en" xlink:label="lab_abvx_ProduitNetDesObligationsNonConvertibles" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">Net proceeds from the issuance of non-convertible bond loans</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_abvx_ProduitNetDesObligationsNonConvertibles" xlink:href="abvx-2025-12-31.xsd#abvx_ProduitNetDesObligationsNonConvertibles"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_abvx_ProduitNetDesObligationsNonConvertibles" xlink:to="lab_abvx_ProduitNetDesObligationsNonConvertibles" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities_019b36d3-2ad4-79c9-bf3b-8439c655c168_negatedLabel_en" xlink:label="lab_ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Purchase of intangible assets, classified as investing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities" xlink:to="lab_ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_abvx_IncreaseDecreaseInNumberOfOrdinarySharesIssuedThroughCapitalIncrease_019b36d3-2ad4-7cdd-866d-7927d4dbab10_label_en" xlink:label="lab_abvx_IncreaseDecreaseInNumberOfOrdinarySharesIssuedThroughCapitalIncrease" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Increase Decrease In Number Of Ordinary Shares Issued Through Capital Increase</link:label>
    <link:label id="lab_abvx_IncreaseDecreaseInNumberOfOrdinarySharesIssuedThroughCapitalIncrease_019b36d3-2ad4-7b05-8ab3-da460248a9cb_documentation_en" xlink:label="lab_abvx_IncreaseDecreaseInNumberOfOrdinarySharesIssuedThroughCapitalIncrease" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">Increase Decrease In Number Of Ordinary Shares Issued Through Capital Increase</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_abvx_IncreaseDecreaseInNumberOfOrdinarySharesIssuedThroughCapitalIncrease" xlink:href="abvx-2025-12-31.xsd#abvx_IncreaseDecreaseInNumberOfOrdinarySharesIssuedThroughCapitalIncrease"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_abvx_IncreaseDecreaseInNumberOfOrdinarySharesIssuedThroughCapitalIncrease" xlink:to="lab_abvx_IncreaseDecreaseInNumberOfOrdinarySharesIssuedThroughCapitalIncrease" xlink:type="arc" order="1"/>
    <link:label id="lab_abvx_EmissionDeCapitauxPropresAutreQueParExerciceDeBonsDeSouscription_019b36d3-2ad4-751b-89a3-24a9223693dd_label_en" xlink:label="lab_abvx_EmissionDeCapitauxPropresAutreQueParExerciceDeBonsDeSouscription" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Issue Of Equity Other Than Through Exercise Of Warrants</link:label>
    <link:label id="lab_abvx_EmissionDeCapitauxPropresAutreQueParExerciceDeBonsDeSouscription_019b36d3-2ad4-720e-9947-6ef8c8c63e43_documentation_en" xlink:label="lab_abvx_EmissionDeCapitauxPropresAutreQueParExerciceDeBonsDeSouscription" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">Issue Of Equity Other Than Through Exercise Of Warrants</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_abvx_EmissionDeCapitauxPropresAutreQueParExerciceDeBonsDeSouscription" xlink:href="abvx-2025-12-31.xsd#abvx_EmissionDeCapitauxPropresAutreQueParExerciceDeBonsDeSouscription"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_abvx_EmissionDeCapitauxPropresAutreQueParExerciceDeBonsDeSouscription" xlink:to="lab_abvx_EmissionDeCapitauxPropresAutreQueParExerciceDeBonsDeSouscription" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ResearchAndDevelopmentExpense_019b36d3-2ad4-7723-af0e-55bf45f4a129_negatedLabel_en" xlink:label="lab_ifrs-full_ResearchAndDevelopmentExpense" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Research and development expense</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ResearchAndDevelopmentExpense" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_ResearchAndDevelopmentExpense"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ResearchAndDevelopmentExpense" xlink:to="lab_ifrs-full_ResearchAndDevelopmentExpense" xlink:type="arc" order="1"/>
    <link:label id="lab_abvx_DettesFiscalesEtSociales_019b36d3-2ad4-74e9-949f-42550c573417_label_en" xlink:label="lab_abvx_DettesFiscalesEtSociales" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Tax and employee-related payables</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_abvx_DettesFiscalesEtSociales" xlink:href="abvx-2025-12-31.xsd#abvx_DettesFiscalesEtSociales"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_abvx_DettesFiscalesEtSociales" xlink:to="lab_abvx_DettesFiscalesEtSociales" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_PaymentsForShareIssueCosts_019b36d3-2ad4-7953-9bd6-f7bd1167df53_negatedLabel_en" xlink:label="lab_ifrs-full_PaymentsForShareIssueCosts" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Payments for share issue costs</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PaymentsForShareIssueCosts" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_PaymentsForShareIssueCosts"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_PaymentsForShareIssueCosts" xlink:to="lab_ifrs-full_PaymentsForShareIssueCosts" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_GeneralAndAdministrativeExpense_019b36d3-2ad4-7292-bae3-7720f2a37eb5_negatedLabel_en" xlink:label="lab_ifrs-full_GeneralAndAdministrativeExpense" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">General and administrative expense</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GeneralAndAdministrativeExpense" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_GeneralAndAdministrativeExpense"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_GeneralAndAdministrativeExpense" xlink:to="lab_ifrs-full_GeneralAndAdministrativeExpense" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities_019b36d3-2ad4-7c38-92df-ad586eb1fa71_negatedLabel_en" xlink:label="lab_ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Purchase of property, plant and equipment, classified as investing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" xlink:to="lab_ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_abvx_RemboursementDesDepots_019b36d3-2ad4-7b22-b543-f2307ac8e08b_label_en" xlink:label="lab_abvx_RemboursementDesDepots" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Reimbursements Of Deposits</link:label>
    <link:label id="lab_abvx_RemboursementDesDepots_019b36d3-2ad4-71d0-a5ca-798182b0627d_documentation_en" xlink:label="lab_abvx_RemboursementDesDepots" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">Reimbursements Of Deposits</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_abvx_RemboursementDesDepots" xlink:href="abvx-2025-12-31.xsd#abvx_RemboursementDesDepots"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_abvx_RemboursementDesDepots" xlink:to="lab_abvx_RemboursementDesDepots" xlink:type="arc" order="1"/>
    <link:label id="lab_abvx_RemboursementDesAvancesConditionnelles_019b36d3-2ad4-7db6-9b95-9115c943e8c9_label_en" xlink:label="lab_abvx_RemboursementDesAvancesConditionnelles" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Net Proceeds From The Royalty Certificates</link:label>
    <link:label id="lab_abvx_RemboursementDesAvancesConditionnelles_019b36d3-2ad4-78de-a4d3-84265c153864_documentation_en" xlink:label="lab_abvx_RemboursementDesAvancesConditionnelles" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">Repayment Of Conditional Advances</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_abvx_RemboursementDesAvancesConditionnelles" xlink:href="abvx-2025-12-31.xsd#abvx_RemboursementDesAvancesConditionnelles"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_abvx_RemboursementDesAvancesConditionnelles" xlink:to="lab_abvx_RemboursementDesAvancesConditionnelles" xlink:type="arc" order="1"/>
    <link:label id="lab_abvx_AjustementsPourGainNetSurVenteDactionsPropres_019b36d3-2ad4-7f00-86a5-c67cfee9ceb3_label_en" xlink:label="lab_abvx_AjustementsPourGainNetSurVenteDactionsPropres" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Adjustments For Net Gain On Sale Of Treasury Shares</link:label>
    <link:label id="lab_abvx_AjustementsPourGainNetSurVenteDactionsPropres_019b36d3-2ad4-72a3-9b91-c83d4b18caf4_documentation_en" xlink:label="lab_abvx_AjustementsPourGainNetSurVenteDactionsPropres" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">Adjustments For Net Gain On Sale Of Treasury Shares</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_abvx_AjustementsPourGainNetSurVenteDactionsPropres" xlink:href="abvx-2025-12-31.xsd#abvx_AjustementsPourGainNetSurVenteDactionsPropres"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_abvx_AjustementsPourGainNetSurVenteDactionsPropres" xlink:to="lab_abvx_AjustementsPourGainNetSurVenteDactionsPropres" xlink:type="arc" order="1"/>
    <link:label id="lab_abvx_AugmentationDiminutionDuNombreDactionsEmisesGraceALaConversionDesOCABSAKreosClaret_019c7bad-a104-7808-b324-d8436c0bc1ff_label_en" xlink:label="lab_abvx_AugmentationDiminutionDuNombreDactionsEmisesGraceALaConversionDesOCABSAKreosClaret" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Increase Decrease In Number Of Shares Issued Through Conversion of the Kreos Claret OCABSA</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_abvx_AugmentationDiminutionDuNombreDactionsEmisesGraceALaConversionDesOCABSAKreosClaret" xlink:href="abvx-2025-12-31.xsd#abvx_AugmentationDiminutionDuNombreDactionsEmisesGraceALaConversionDesOCABSAKreosClaret"/>
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    <link:label id="lab_ifrs-full_InterestPaidClassifiedAsFinancingActivities_019b36d3-2ad4-7310-b728-17b82a7faeca_negatedLabel_en" xlink:label="lab_ifrs-full_InterestPaidClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Interest paid, classified as financing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InterestPaidClassifiedAsFinancingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_InterestPaidClassifiedAsFinancingActivities"/>
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    <link:label id="lab_abvx_IssueOfConvertibleNotes_019b36d3-2ad4-78e1-a82e-9080a8cf69b2_label_en" xlink:label="lab_abvx_IssueOfConvertibleNotes" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Issue of convertible notes</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_abvx_IssueOfConvertibleNotes" xlink:href="abvx-2025-12-31.xsd#abvx_IssueOfConvertibleNotes"/>
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    <link:label id="lab_abvx_AjustementsPourAutresRevenusFinanciers_019b36d3-2ad4-734c-871a-c658ad66aeea_negatedLabel_en" xlink:label="lab_abvx_AjustementsPourAutresRevenusFinanciers" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Adjustments For Other Finance Income</link:label>
    <link:label id="lab_abvx_AjustementsPourAutresRevenusFinanciers_019b36d3-2ad4-7231-b3bd-768b07bf43ce_label_en" xlink:label="lab_abvx_AjustementsPourAutresRevenusFinanciers" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Adjustments For Other Finance Income</link:label>
    <link:label id="lab_abvx_AjustementsPourAutresRevenusFinanciers_019b36d3-2ad4-7b9e-879f-827515e051f1_documentation_en" xlink:label="lab_abvx_AjustementsPourAutresRevenusFinanciers" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en">Adjustments For Other Finance Income</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_abvx_AjustementsPourAutresRevenusFinanciers" xlink:href="abvx-2025-12-31.xsd#abvx_AjustementsPourAutresRevenusFinanciers"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_abvx_AjustementsPourAutresRevenusFinanciers" xlink:to="lab_abvx_AjustementsPourAutresRevenusFinanciers" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_SalesAndMarketingExpense_019b36d3-2ad4-787e-8f8e-969fe0d8719e_negatedLabel_en" xlink:label="lab_ifrs-full_SalesAndMarketingExpense" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en">Sales and marketing expense</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SalesAndMarketingExpense" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_SalesAndMarketingExpense"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_SalesAndMarketingExpense" xlink:to="lab_ifrs-full_SalesAndMarketingExpense" xlink:type="arc" order="1"/>
    <link:label id="lab_abvx_ExercicesDeBonsDeSouscriptionDactionsAutresQueKreosClaret_019b36d3-2ad4-7d8b-9e85-a2bba9b4151c_label_en" xlink:label="lab_abvx_ExercicesDeBonsDeSouscriptionDactionsAutresQueKreosClaret" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en">Exercises Of Share Warrants Other Than Kreos</link:label>
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