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    <element id="bivi_ExerciseOfWarrantsShares" name="ExerciseOfWarrantsShares" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_CashlessExerciseOfWarrants" name="CashlessExerciseOfWarrants" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_CashlessExerciseOfWarrantsShares" name="CashlessExerciseOfWarrantsShares" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_StockbasedCompensationIssuanceOfCommonStockForServicesRendered" name="StockbasedCompensationIssuanceOfCommonStockForServicesRendered" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_StockbasedCompensationIssuanceOfCommonStockForServicesRenderedShares" name="StockbasedCompensationIssuanceOfCommonStockForServicesRenderedShares" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_ProceedsFromIssuanceOfCommonStockNetCosts" name="ProceedsFromIssuanceOfCommonStockNetCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_ProceedsFromIssuanceOfCommonStockNetOfCostsOfShares" name="ProceedsFromIssuanceOfCommonStockNetOfCostsOfShares" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_IssuanceOfAdditionalSharesForFractionalSharesEffectedByReverseSplit" name="IssuanceOfAdditionalSharesForFractionalSharesEffectedByReverseSplit" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_IssuanceOfAdditionalSharesForFractionalSharesEffectedByReverseSplitShares" name="IssuanceOfAdditionalSharesForFractionalSharesEffectedByReverseSplitShares" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_DeemedDividendForRatchetAdjustmentToWarrants" name="DeemedDividendForRatchetAdjustmentToWarrants" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_StockbasedCompensationRestrictedStockUnitsAndRestrictedShares" name="StockbasedCompensationRestrictedStockUnitsAndRestrictedShares" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_StockBasedCompensationExpenseIssuanceOfCommonStockForServicesRendered" name="StockBasedCompensationExpenseIssuanceOfCommonStockForServicesRendered" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_AccretionOfUnearnedLoanDiscount" name="AccretionOfUnearnedLoanDiscount" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_AccretionOfLoanPremium" name="AccretionOfLoanPremium" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_NoncashLeaseExpenseFromRightofuseAssets" name="NoncashLeaseExpenseFromRightofuseAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_IncreaseDecreaseInGrantReceivable" name="IncreaseDecreaseInGrantReceivable" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_PaymentsForLoan" name="PaymentsForLoan" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_PaymentOfLoanPremium" name="PaymentOfLoanPremium" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_DeemedDividendOfRatchetAdjustmentsToWarrants" name="DeemedDividendOfRatchetAdjustmentsToWarrants" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_DisclosureLeasesAbstract" name="DisclosureLeasesAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_DisclosureEmployeeBenefitPlanAbstract" name="DisclosureEmployeeBenefitPlanAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_EmployeeBenefitPlanTextBlock" name="EmployeeBenefitPlanTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_ReverseStockSpliteUpPolicyTextBlock" name="ReverseStockSpliteUpPolicyTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_ConcentrationOfCreditRiskinTheFinancialServiceIndustryPolicyTextBlock" name="ConcentrationOfCreditRiskinTheFinancialServiceIndustryPolicyTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_GrantProgramPolicyTextBlock" name="GrantProgramPolicyTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_ScheduleOfFutureEstimatedMinimumLeasePaymentsUnderNonCancelableOperatingLeases" name="ScheduleOfFutureEstimatedMinimumLeasePaymentsUnderNonCancelableOperatingLeases" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_ScheduleOfWeightedAverageRemainingLeaseTermAndDiscountRateTableTextBlock" name="ScheduleOfWeightedAverageRemainingLeaseTermAndDiscountRateTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_WorkingCapital" name="WorkingCapital" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_StockholderEquities" name="StockholderEquities" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_AccumulatedDeficit" name="AccumulatedDeficit" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_SharebaseCompensationArrangementBySharebasedPaymentAwardOptionsGrantedWeightedAverageRemainingContractualTerm" name="SharebaseCompensationArrangementBySharebasedPaymentAwardOptionsGrantedWeightedAverageRemainingContractualTerm" nillable="true" xbrli:periodType="duration" type="xbrli:durationItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm1" name="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm1" nillable="true" xbrli:periodType="duration" type="xbrli:durationItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsGrantedWeightedAverageRemainingContractualTerm" name="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsGrantedWeightedAverageRemainingContractualTerm" nillable="true" xbrli:periodType="duration" type="xbrli:durationItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_NumberOfPrefundedUnits" name="NumberOfPrefundedUnits" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_AdditionalWarrantsPurchased" name="AdditionalWarrantsPurchased" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_SharePriceDescription" name="SharePriceDescription" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_NumberOfAwardedBonusAndRetentionIncentiveStockOptions" name="NumberOfAwardedBonusAndRetentionIncentiveStockOptions" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExcersiedIntrinsicValue1" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExcersiedIntrinsicValue1" nillable="true" xbrli:periodType="duration" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_PrefundedWarrants" name="PrefundedWarrants" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_MonthlyRent" name="MonthlyRent" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_CashPaidForAmountsIncludedInMeasurementOfOperatingLeaseLiabilities" name="CashPaidForAmountsIncludedInMeasurementOfOperatingLeaseLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_ClinicalStudies" name="ClinicalStudies" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_ClinicalTeams" name="ClinicalTeams" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_ChemistryManufacturingAndControls" name="ChemistryManufacturingAndControls" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_OtherResearchAndDevelopmentExpenses" name="OtherResearchAndDevelopmentExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_SellingGeneralAndAdministrativeExpenses" name="SellingGeneralAndAdministrativeExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="bivi_NetLoss" name="NetLoss" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
</schema>
