<?xml version="1.0"?><ownershipDocument><schemaVersion>X0201</schemaVersion>    <documentType>4/A</documentType><periodOfReport>2003-12-09</periodOfReport><dateOfOriginalSubmission>2003-12-11</dateOfOriginalSubmission><notSubjectToSection16>0</notSubjectToSection16><issuer><issuerCik>0000767673</issuerCik><issuerName>SEROLOGICALS CORP</issuerName>        <issuerTradingSymbol>SERO</issuerTradingSymbol></issuer><reportingOwner><reportingOwnerId><rptOwnerCik>0001193614</rptOwnerCik><rptOwnerName>LINTON JEFFREY D</rptOwnerName></reportingOwnerId><reportingOwnerAddress><rptOwnerStreet1>5655 SPALDING DRIVE</rptOwnerStreet1><rptOwnerStreet2></rptOwnerStreet2><rptOwnerCity>NORCROSS</rptOwnerCity><rptOwnerState>GA</rptOwnerState><rptOwnerZipCode>30092</rptOwnerZipCode><rptOwnerStateDescription></rptOwnerStateDescription></reportingOwnerAddress><reportingOwnerRelationship><isDirector>0</isDirector><isOfficer>1</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther><officerTitle>President Chemicon Division</officerTitle></reportingOwnerRelationship></reportingOwner><nonDerivativeTable><nonDerivativeTransaction><securityTitle><value>Common Stock, $0.01 Par Value</value></securityTitle><transactionDate><value>2003-12-09</value></transactionDate><deemedExecutionDate><value>2003-12-09</value></deemedExecutionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>M</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>10513.0000</value></transactionShares><transactionPricePerShare><value>6.7500</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>16790.0000</value><footnoteId id="F1" /></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></nonDerivativeTransaction><nonDerivativeTransaction><securityTitle><value>Common Stock, $0.01 Par Value</value></securityTitle><transactionDate><value>2003-12-09</value></transactionDate><deemedExecutionDate><value>2003-12-09</value></deemedExecutionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>S</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>10513.0000</value></transactionShares><transactionPricePerShare><value>18.1690</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>6277.0000</value><footnoteId id="F1" /></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></nonDerivativeTransaction></nonDerivativeTable><derivativeTable><derivativeTransaction><securityTitle><value>Stock Option</value></securityTitle><conversionOrExercisePrice><value>6.7500</value></conversionOrExercisePrice><transactionDate><value>2003-12-09</value></transactionDate><deemedExecutionDate><value>2003-12-09</value></deemedExecutionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>C</transactionCode><equitySwapInvolved>1</equitySwapInvolved></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>10513.0000</value></transactionShares><transactionPricePerShare><value>0</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>2001-10-09</value></exerciseDate><expirationDate><value>2006-10-09</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Stock, $0.01 Par Value</value></underlyingSecurityTitle><underlyingSecurityShares><value>10513.0000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>101987.0000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></derivativeTransaction></derivativeTable><footnotes><footnote id="F1">Includes 4,788 Deferred Stock Units, 2,997 of which represent shares of Common Stock distributable to Mr. Linton if his employment with the Corporation is terminated, and 1,791 of which vest 33 1/3% on each anniversary date of the grant, at which time Mr. Linton becomes entitled to receive a like number of shares of Common Stock. </footnote></footnotes><remarks></remarks><ownerSignature><signatureName>/s/ Craig Brown, Attorney in Fact for Jeffrey D. Linton</signatureName><signatureDate>2003-12-15</signatureDate></ownerSignature></ownershipDocument>

