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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 Fk098PbxLkYZm4h+cIZVzGvbjkcgHAuQVNsr4+FVESVQmwboQo1nxQ6A4lOhtGZB
 Q1Rl5b4TAXw/Kz1nYQ4kog==

<SEC-DOCUMENT>0001193663-04-000003.txt : 20040113
<SEC-HEADER>0001193663-04-000003.hdr.sgml : 20040113
<ACCEPTANCE-DATETIME>20040113192259
ACCESSION NUMBER:		0001193663-04-000003
CONFORMED SUBMISSION TYPE:	5
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20031231
FILED AS OF DATE:		20040113

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			HYCOR BIOMEDICAL INC /DE/
		CENTRAL INDEX KEY:			0000719447
		STANDARD INDUSTRIAL CLASSIFICATION:	IN VITRO & IN VIVO DIAGNOSTIC SUBSTANCES [2835]
		IRS NUMBER:				581437178
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		7272 CHAPMAN AVE
		CITY:			GARDEN GROVE
		STATE:			CA
		ZIP:			92841
		BUSINESS PHONE:		7149333000

	MAIL ADDRESS:	
		STREET 2:		7272 CHAPMAN AVENUE
		CITY:			GARDEN GROVE
		STATE:			CA
		ZIP:			92841

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	HYBRIDOMA SCIENCES INC
		DATE OF NAME CHANGE:	19860813

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			DAVOUDZADEH DAVID PHD
		CENTRAL INDEX KEY:			0001206596

	FILING VALUES:
		FORM TYPE:		5
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-11647
		FILM NUMBER:		04523693

	BUSINESS ADDRESS:	
		STREET 1:		7272 CHAPMAN AVENUE
		CITY:			GARDEN GROVE
		STATE:			CA
		ZIP:			92841
		BUSINESS PHONE:		7149333007

	MAIL ADDRESS:	
		STREET 1:		7272 CHAPMAN AVENUE
		CITY:			GARDEN GROVE
		STATE:			CA
		ZIP:			92841
</SEC-HEADER>
<DOCUMENT>
<TYPE>5
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>
    <schemaVersion>X0201</schemaVersion>

    <documentType>5</documentType><periodOfReport>2003-12-31</periodOfReport>
    <form3HoldingsReported>0</form3HoldingsReported>

    <form4TransactionsReported>0</form4TransactionsReported>

    <issuer>
        <issuerCik>0000719447</issuerCik>
        <issuerName>HYCOR BIOMEDICAL INC /DE/</issuerName>
        <issuerTradingSymbol>HYBD</issuerTradingSymbol></issuer><reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001206596</rptOwnerCik>
            <rptOwnerName>DAVOUDZADEH DAVID PHD</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>7272 CHAPMAN AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>GARDEN GROVE</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>92841</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
<isDirector>0</isDirector><isOfficer>1</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther><officerTitle>Vice President, R&amp;D</officerTitle></reportingOwnerRelationship></reportingOwner><nonDerivativeTable><nonDerivativeTransaction><securityTitle><value>Common Stock</value></securityTitle><transactionDate><value>2003-06-30</value></transactionDate><transactionCoding><transactionFormType>5</transactionFormType><transactionCode>M</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>2571</value></transactionShares><transactionPricePerShare><value>1.78</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>4738</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwne
rship><value/></natureOfOwnership></ownershipNature></nonDerivativeTransaction><nonDerivativeTransaction><securityTitle><value>Common Stock</value></securityTitle><transactionDate><value>2003-09-30</value></transactionDate><transactionCoding><transactionFormType>5</transactionFormType><transactionCode>M</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>929</value></transactionShares><transactionPricePerShare><value>4.22</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>5667</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></nonDerivativeTransaction><nonDerivativeTransaction><securityTitle><value>Common Stock</value></s
ecurityTitle><transactionDate><value>2003-12-31</value></transactionDate><transactionCoding><transactionFormType>5</transactionFormType><transactionCode>M</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>1085</value></transactionShares><transactionPricePerShare><value>3.31</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>6752</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></nonDerivativeTransaction></nonDerivativeTable><footnotes/><remarks/><ownerSignature><signatureName>Reg Jones, Attorney-in-Fact, On Behalf of David Davoudzadeh</signatureName><signatureDate>2004-01-13</signatureDate></ownerSignature></ownershipDo
cument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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