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  <xsd:element id="cgix_RelatedPartyTransactionManagementAdvisoryFee" name="RelatedPartyTransactionManagementAdvisoryFee" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cgix_RelatedPartyTransactionOneTimePaymentForRight" name="RelatedPartyTransactionOneTimePaymentForRight" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cgix_RestrictedCashPolicyPolicyTextBlock" name="RestrictedCashPolicyPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cgix_RisksAndUncertaintiesPolicyPolicyTextBlock" name="RisksAndUncertaintiesPolicyPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cgix_SecondaryOfferingMember" name="SecondaryOfferingMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cgix_ShareBasedCompensationArrangementByShareBasedPaymentAwardAdditionalSharesIssuedInPeriod" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAdditionalSharesIssuedInPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="cgix_ShareBasedCompensationArrangementByShareBasedPaymentAwardIssuedWeightedAveragePricePerShare" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardIssuedWeightedAveragePricePerShare" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cgix_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateIntrinsicValueAbstract" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateIntrinsicValueAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cgix_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInStockOptionExchangeInPeriod" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInStockOptionExchangeInPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="cgix_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsStrikePrice" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsStrikePrice" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element id="cgix_ShareBasedCompensationConsulting" name="ShareBasedCompensationConsulting" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cgix_ShareBasedCompensationOutsidePlanStockOptionsIssued" name="ShareBasedCompensationOutsidePlanStockOptionsIssued" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="cgix_ShareBasedCompensationResearchAndDevelopment" name="ShareBasedCompensationResearchAndDevelopment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cgix_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePrice" name="ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePrice" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element id="cgix_SharebasedCompensationArrangementbySharebasedPaymentAwardAwardVestingNumberofInstallments" name="SharebasedCompensationArrangementbySharebasedPaymentAwardAwardVestingNumberofInstallments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cgix_SignificantAccountingPoliciesLineItems" name="SignificantAccountingPoliciesLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cgix_SignificantAccountingPoliciesTable" name="SignificantAccountingPoliciesTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cgix_StandbyLettersOfCreditTextBlock" name="StandbyLettersOfCreditTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cgix_StockAppreciationRightsOutstanding" name="StockAppreciationRightsOutstanding" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="cgix_StockIssuedDuringPeriodSharesStockOptionsExercisedPricePerShare" name="StockIssuedDuringPeriodSharesStockOptionsExercisedPricePerShare" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element id="cgix_StockPricesUsedInComputingTheFairValueOfWarrantsExercised" name="StockPricesUsedInComputingTheFairValueOfWarrantsExercised" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cgix_StrikePriceTwelvePointFiveZeroMember" name="StrikePriceTwelvePointFiveZeroMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cgix_StrikePriceTwentyFiveOrMoreMember" name="StrikePriceTwentyFiveOrMoreMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cgix_TenPercentOrMoreClinicalRevenueMember" name="TenPercentOrMoreClinicalRevenueMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cgix_TwoThousandAndElevenPlanMember" name="TwoThousandAndElevenPlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cgix_TwoThousandEightPlanMember" name="TwoThousandEightPlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cgix_TwoThousandElevenEquityPlanMember" name="TwoThousandElevenEquityPlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cgix_UnsettledTreasuryStockRepurchases" name="UnsettledTreasuryStockRepurchases" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cgix_WarrantDerivativeMember" name="WarrantDerivativeMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cgix_WarrantIssuedForMember" name="WarrantIssuedForMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cgix_WarrantIssuedWithMember" name="WarrantIssuedWithMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cgix_WarrantLiabilityPolicyPolicyTextBlock" name="WarrantLiabilityPolicyPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cgix_WarrantsCommonStockSharesExercisableAdjusted" name="WarrantsCommonStockSharesExercisableAdjusted" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element id="cgix_WarrantsDisclosureTextBlock" name="WarrantsDisclosureTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cgix_WarrantsIssuedToPurchaseCommonStockShares" name="WarrantsIssuedToPurchaseCommonStockShares" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cgix_WarrantsOtherWarrantsMember" name="WarrantsOtherWarrantsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cgix_WellsFargoBankMember" name="WellsFargoBankMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
</xsd:schema>


