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  <xsd:element abstract="true" id="vcyt_ComponentsOfDeferredTaxAssetsNonCurrentAbstract" name="ComponentsOfDeferredTaxAssetsNonCurrentAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_ProfessionalLicensureFees" name="ProfessionalLicensureFees" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_ProceedsFromReimbursedRent" name="ProceedsFromReimbursedRent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_TenantImprovementAllowance" name="TenantImprovementAllowance" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="false" id="vcyt_ClassOfWarrantOrRightNumberOfSecuritiesForWhichWarrantsBecameExercisable" name="ClassOfWarrantOrRightNumberOfSecuritiesForWhichWarrantsBecameExercisable" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="vcyt_CommonStockWarrantsMember" name="CommonStockWarrantsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_ClassOfWarrantOrRightNumberOfSecuritiesForWhichWarrantsWillBecomeExercisableInEventOfConversionOfPreferredStockIntoCommonStock" name="ClassOfWarrantOrRightNumberOfSecuritiesForWhichWarrantsWillBecomeExercisableInEventOfConversionOfPreferredStockIntoCommonStock" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="vcyt_ExercisePriceDollars12.12Member" name="ExercisePriceDollars12.12Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_ScheduleOfCommonStockCapitalSharesReservedForFutureIssuanceTableTextBlock" name="ScheduleOfCommonStockCapitalSharesReservedForFutureIssuanceTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_VotingRightsForEachShareOfStock" name="VotingRightsForEachShareOfStock" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vcyt_SeriesAConvertiblePreferredStockMember" name="SeriesAConvertiblePreferredStockMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vcyt_SeriesBConvertiblePreferredStockMember" name="SeriesBConvertiblePreferredStockMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vcyt_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualLifeAbstract" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualLifeAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_ExcessPaymentRelatedToTestingAndEvaluationServices" name="ExcessPaymentRelatedToTestingAndEvaluationServices" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="vcyt_PurchaseObligationAbstract" name="PurchaseObligationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vcyt_EmployeeAndNonEmployeeStockOptionMember" name="EmployeeAndNonEmployeeStockOptionMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_DeferredTaxAssetsTaxCreditCarryforwardsResearchAndDevelopment" name="DeferredTaxAssetsTaxCreditCarryforwardsResearchAndDevelopment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="false" id="vcyt_IncomeTaxesPeriodForWhichResearchTaxCreditExtendedForQualifiedResearchExpendituresIncurredThroughEndOfSpecifiedPeriod" name="IncomeTaxesPeriodForWhichResearchTaxCreditExtendedForQualifiedResearchExpendituresIncurredThroughEndOfSpecifiedPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vcyt_ExercisePriceDollars2.68Member" name="ExercisePriceDollars2.68Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vcyt_ExercisePriceDollars4.00Member" name="ExercisePriceDollars4.00Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vcyt_ExercisePriceDollars6.04Member" name="ExercisePriceDollars6.04Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_ClassOfWarrantOrRightPotentialNumberOfAggregateSecuritiesExercisable" name="ClassOfWarrantOrRightPotentialNumberOfAggregateSecuritiesExercisable" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element abstract="false" id="vcyt_CollaborativeArrangementNumberOfCountriesOutsideUnitedStatesInWhichMarketingAuthorizationIsObtained" name="CollaborativeArrangementNumberOfCountriesOutsideUnitedStatesInWhichMarketingAuthorizationIsObtained" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element abstract="false" id="vcyt_CollaborativeArrangementAdditionalPaymentsThatMayBeReceived" name="CollaborativeArrangementAdditionalPaymentsThatMayBeReceived" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_CollaborativeArrangementAdditionalPaymentsThatMayBeReceivedForEachCountryOutsideUnitedStatesInWhichEntityObtainsMarketingAuthorizationAndAchievesSpecifiedLevelOfReimbursement" name="CollaborativeArrangementAdditionalPaymentsThatMayBeReceivedForEachCountryOutsideUnitedStatesInWhichEntityObtainsMarketingAuthorizationAndAchievesSpecifiedLevelOfReimbursement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_CollaborativeArrangementNumberOfCountriesOutsideUnitedStatesForWhichAdditionalPaymentsMayBeReceived" name="CollaborativeArrangementNumberOfCountriesOutsideUnitedStatesForWhichAdditionalPaymentsMayBeReceived" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <element id="vcyt_CollaborativeArrangementPercentageOfCashReceiptsOfCoPromotionFeesForRemainingPeriods" name="CollaborativeArrangementPercentageOfCashReceiptsOfCoPromotionFeesForRemainingPeriods" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <xsd:element abstract="false" id="vcyt_CollaborativeArrangementMaximumAmountToBeSpentByCoPromoterForQualifyingClinicalDevelopmentActivitiesInCountriesThatRequireAdditionalTestingForApproval" name="CollaborativeArrangementMaximumAmountToBeSpentByCoPromoterForQualifyingClinicalDevelopmentActivitiesInCountriesThatRequireAdditionalTestingForApproval" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
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  <xsd:element abstract="true" id="vcyt_ConvertiblePreferredStockWarrantsMember" name="ConvertiblePreferredStockWarrantsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_DebtInstrumentNumberOfInstallments" name="DebtInstrumentNumberOfInstallments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element abstract="false" id="vcyt_DebtInstrumentPeriodAfterWhichDebtIsRepayable" name="DebtInstrumentPeriodAfterWhichDebtIsRepayable" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_DebtInstrumentPenaltyPercentageOnPrepaymentWithinOneYearOfOrigination" name="DebtInstrumentPenaltyPercentageOnPrepaymentWithinOneYearOfOrigination" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_DebtInstrumentPenaltyPercentageOnPrepaymentWithinTwoYearsOfOrigination" name="DebtInstrumentPenaltyPercentageOnPrepaymentWithinTwoYearsOfOrigination" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_DebtInstrumentPenaltyPercentageOnPrepaymentAfterTwoYearsOfOrigination" name="DebtInstrumentPenaltyPercentageOnPrepaymentAfterTwoYearsOfOrigination" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_DebtInstrumentRemainingDiscountAmortizationPeriod" name="DebtInstrumentRemainingDiscountAmortizationPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_AccruedConsultingFeesCurrent" name="AccruedConsultingFeesCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="vcyt_SeriesCConvertiblePreferredStockMember" name="SeriesCConvertiblePreferredStockMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_ClassOfWarrantOrRightNumberOfSecuritiesForWhichWarrantsMayBecomeExercisable" name="ClassOfWarrantOrRightNumberOfSecuritiesForWhichWarrantsMayBecomeExercisable" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element abstract="false" id="vcyt_WarrantsAndRightsNoteDisclosureTextBlock" name="WarrantsAndRightsNoteDisclosureTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vcyt_TermLoanOneMember" name="TermLoanOneMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_ShareBasedCompensationNonBonusRelated" name="ShareBasedCompensationNonBonusRelated" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
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  <xsd:element abstract="false" id="vcyt_IncreaseDecreaseInAccruedLiabilitiesAndDeferredRent" name="IncreaseDecreaseInAccruedLiabilitiesAndDeferredRent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vcyt_ServicesAgreementAbstract" name="ServicesAgreementAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vcyt_EmployeeAndNonEmployeeStockOptionExcludingBonusCompensationMember" name="EmployeeAndNonEmployeeStockOptionExcludingBonusCompensationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vcyt_EmployeeStockOptionBonusCompensationMember" name="EmployeeStockOptionBonusCompensationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_ConcentrationsOfCreditAndOtherRisksAndUncertaintiesPolicyTextBlock" name="ConcentrationsOfCreditAndOtherRisksAndUncertaintiesPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vcyt_MedicareMember" name="MedicareMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vcyt_AetnaMember" name="AetnaMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vcyt_UnitedHealthcareMember" name="UnitedHealthcareMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_NumberOfMajorFinancialInstitutionsWithWhichCashAndCashEquivalentsDeposited" name="NumberOfMajorFinancialInstitutionsWithWhichCashAndCashEquivalentsDeposited" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="vcyt_AllowanceForDoubtfulAccountsAbstract" name="AllowanceForDoubtfulAccountsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_TestingAndEvaluationServicesExpense" name="TestingAndEvaluationServicesExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_DebtInstrumentEndOfTermPaymentAmount" name="DebtInstrumentEndOfTermPaymentAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="false" id="vcyt_DebtInstrumentEndOfTermPaymentAsPercentageOfTotalOutstandingPrincipal" name="DebtInstrumentEndOfTermPaymentAsPercentageOfTotalOutstandingPrincipal" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vcyt_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrantRollForward" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrantRollForward" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageGrantDateFairValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageGrantDateFairValue" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vcyt_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateIntrinsicValueAbstract" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateIntrinsicValueAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vcyt_CollaborativeArrangementDisclosureAbstract" name="CollaborativeArrangementDisclosureAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vcyt_GenzymeCorporationMember" name="GenzymeCorporationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vcyt_DocumentAndEntityInformationAbstract" name="DocumentAndEntityInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <element id="vcyt_CollaborativeArrangementPriorNoticePeriodForTerminationOfAgreement" name="CollaborativeArrangementPriorNoticePeriodForTerminationOfAgreement" nillable="true" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <xsd:element abstract="true" id="vcyt_EmployeeStockOptionExcludingBonusCompensationMember" name="EmployeeStockOptionExcludingBonusCompensationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vcyt_NonEmployeeStockOptionMember" name="NonEmployeeStockOptionMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vcyt_EmployeeStockOptionAnnualBonusCompensationMember" name="EmployeeStockOptionAnnualBonusCompensationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vcyt_EmployeeStockOptionPerformanceBonusCompensationMember" name="EmployeeStockOptionPerformanceBonusCompensationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_CollaborativeArrangementPercentageOfCashReceiptsOfCoPromotionFees" name="CollaborativeArrangementPercentageOfCashReceiptsOfCoPromotionFees" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vcyt_ExercisePriceDollars0.08Member" name="ExercisePriceDollars0.08Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vcyt_ExercisePriceDollars0.80Member" name="ExercisePriceDollars0.80Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
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  <xsd:element abstract="true" id="vcyt_ExercisePriceDollars7.92Member" name="ExercisePriceDollars7.92Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_CollaborativeArrangementPercentageOfCoPromotionFeeRepaidTerminationOfAgreementPeriodOne" name="CollaborativeArrangementPercentageOfCoPromotionFeeRepaidTerminationOfAgreementPeriodOne" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_CollaborativeArrangementPercentageOfCoPromotionFeeRepaidTerminationOfAgreementPeriodTwo" name="CollaborativeArrangementPercentageOfCoPromotionFeeRepaidTerminationOfAgreementPeriodTwo" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_CollaborativeArrangementPercentageOfCoPromotionFeeRepaidTerminationOfAgreementPeriodThree" name="CollaborativeArrangementPercentageOfCoPromotionFeeRepaidTerminationOfAgreementPeriodThree" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_CollaborativeArrangementCoPromotionExpenses" name="CollaborativeArrangementCoPromotionExpenses" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_CollaborativeArrangementOutstandingObligation" name="CollaborativeArrangementOutstandingObligation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="vcyt_ExercisePriceRangeFromDollars0.08ToDollars12.12Member" name="ExercisePriceRangeFromDollars0.08ToDollars12.12Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_ConversionOfPreferredStockWarrantLiabilityAmountConverted" name="ConversionOfPreferredStockWarrantLiabilityAmountConverted" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_ConvertiblePreferredStockIssuanceCostsIncurredButNotYetPaid" name="ConvertiblePreferredStockIssuanceCostsIncurredButNotYetPaid" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_StockBasedCompensationTransferToEquity" name="StockBasedCompensationTransferToEquity" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_ConvertiblePreferredStockOriginalIssuePrice" name="ConvertiblePreferredStockOriginalIssuePrice" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="instant" />
  <xsd:element abstract="false" id="vcyt_FairValueOfPreferredStockLiability" name="FairValueOfPreferredStockLiability" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vcyt_DerivativeFinancialInstrumentsLiabilitiesPreferredStockLiabilityMember" name="DerivativeFinancialInstrumentsLiabilitiesPreferredStockLiabilityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_CollaborativeArrangementPaymentReceived" name="CollaborativeArrangementPaymentReceived" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_ConversionOfStockSharesIssuedAsIfConverted" name="ConversionOfStockSharesIssuedAsIfConverted" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element abstract="false" id="vcyt_ConversionOfStockSharesIssuedAsIfConvertedConvertiblePreferredStockReservedForIssuance" name="ConversionOfStockSharesIssuedAsIfConvertedConvertiblePreferredStockReservedForIssuance" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element abstract="false" id="vcyt_TransferOfPreferredStockLiabilityToEquity" name="TransferOfPreferredStockLiabilityToEquity" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_FairValueOfPreferredStockWarrants" name="FairValueOfPreferredStockWarrants" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_ClassOfWarrantOrRightTermOfWarrantsOrRights" name="ClassOfWarrantOrRightTermOfWarrantsOrRights" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vcyt_ComponentsOfDeferredTaxAssetsCurrentAbstract" name="ComponentsOfDeferredTaxAssetsCurrentAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_InitialPublicOfferingCostsIncludedInAccountsPayableAndAccruedLiabilities" name="InitialPublicOfferingCostsIncludedInAccountsPayableAndAccruedLiabilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="vcyt_StockIssuedDuringPeriodSharesWarrantsExercised" name="StockIssuedDuringPeriodSharesWarrantsExercised" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vcyt_ExercisePriceRangeFromDollars14.34ToDollars18.24Member" name="ExercisePriceRangeFromDollars14.34ToDollars18.24Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vcyt_ExercisePriceRangeFromDollars0.08ToDollars7.92Member" name="ExercisePriceRangeFromDollars0.08ToDollars7.92Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="vcyt_ExercisePriceRangeFromDollars0.08ToDollars18.24Member" name="ExercisePriceRangeFromDollars0.08ToDollars18.24Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_PaymentsOfStockIssuanceCostsConvertiblePreferredStock" name="PaymentsOfStockIssuanceCostsConvertiblePreferredStock" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="false" id="vcyt_PaymentsOfStockIssuanceCostsInitialPublicOffering" name="PaymentsOfStockIssuanceCostsInitialPublicOffering" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <element id="vcyt_ExercisePriceRangeFromDollars1264ToDollars1824Member" name="ExercisePriceRangeFromDollars1264ToDollars1824Member" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="vcyt_NoncashExpenseInterestOnDebtBalloonPayment" name="NoncashExpenseInterestOnDebtBalloonPayment" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="vcyt_OtherIncomeRentReimbursement" name="OtherIncomeRentReimbursement" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="vcyt_CollaborativeArrangementPercentageOfCashReceiptsOfCoPromotionFeesNextFiscalYearAndThereafter" name="CollaborativeArrangementPercentageOfCashReceiptsOfCoPromotionFeesNextFiscalYearAndThereafter" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
</xsd:schema>
