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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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<SEC-DOCUMENT>0001433756-09-000001.txt : 20091209
<SEC-HEADER>0001433756-09-000001.hdr.sgml : 20091209
<ACCEPTANCE-DATETIME>20091209115313
ACCESSION NUMBER:		0001433756-09-000001
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20091122
FILED AS OF DATE:		20091209
DATE AS OF CHANGE:		20091209

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Casterlin Douglas
		CENTRAL INDEX KEY:			0001433756

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-28666
		FILM NUMBER:		091230403

	MAIL ADDRESS:	
		STREET 1:		C/O MELISSA A. WATERHOUSE/ABMC
		STREET 2:		122 SMITH ROAD
		CITY:			KINDERHOOK
		STATE:			NY
		ZIP:			12106

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			AMERICAN BIO MEDICA CORP
		CENTRAL INDEX KEY:			0000896747
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				141702188
		STATE OF INCORPORATION:			NY
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		122 SMITH ROAD
		CITY:			KINDERHOOK
		STATE:			NY
		ZIP:			12106
		BUSINESS PHONE:		5187588158

	MAIL ADDRESS:	
		STREET 1:		122 SMITH ROAD
		CITY:			KINDERHOOK
		STATE:			NY
		ZIP:			12106
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2009-11-22</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000896747</issuerCik>
        <issuerName>AMERICAN BIO MEDICA CORP</issuerName>
        <issuerTradingSymbol>ABMC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001433756</rptOwnerCik>
            <rptOwnerName>Casterlin Douglas</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O MELISSA A. WATERHOUSE/ABMC</rptOwnerStreet1>
            <rptOwnerStreet2>122 SMITH ROAD</rptOwnerStreet2>
            <rptOwnerCity>KINDERHOOK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>12106</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Executive Vice President</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Non-Statutory Stock Option</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>2.5</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2009-11-22</value>
                <footnoteId id="F1"/>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F2"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>100000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F4"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>1999-11-22</value>
                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <value>2009-11-22</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Shares</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>100000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>200000</value>
                    <footnoteId id="F5"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Option grant was originally issued on 11/22/99 and reported on a Form 5 in 2001, and again on a Form 3 filed on 5-7-08 when Mr. Casterlin was re-appointed to the position of Executive Vice President. The expiration date of 11/22/09 was also reported on both of these filings.</footnote>
        <footnote id="F2">Option grant expired naturally on 11/22/09.</footnote>
        <footnote id="F3">Option grant vested 25% each year when originally issued and was vested in full on 11/4/2002.</footnote>
        <footnote id="F4">The closing price of the Company's common shares on the date of the grant (11/22/99) was $1.63. The closing price of the Company's common shares on 11/23/09 (the trading day immediately following the expiration date of 11/22/09) was $0.14.</footnote>
        <footnote id="F5">Mr. Casterlin currently has 2 option grants covering a total of 200,000 common shares of the Company. Both of these grants have been previously reported on the appropriate Section 16(a) filing.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Douglas Casterlin</signatureName>
        <signatureDate>2009-12-09</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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