-----BEGIN PRIVACY-ENHANCED MESSAGE-----
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,
 NCrT3/xSA/jV/vN0ZEFfs9TuUXROnj1N9LSzg0jbyeR1pBCE6zSzurIcId+CTjmY
 CSPHFj6a7w13AmO4lXr+Zg==

<SEC-DOCUMENT>0001179110-08-005768.txt : 20080312
<SEC-HEADER>0001179110-08-005768.hdr.sgml : 20080312
<ACCEPTANCE-DATETIME>20080312162034
ACCESSION NUMBER:		0001179110-08-005768
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20080310
FILED AS OF DATE:		20080312
DATE AS OF CHANGE:		20080312

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BIOANALYTICAL SYSTEMS INC
		CENTRAL INDEX KEY:			0000720154
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMMERCIAL PHYSICAL & BIOLOGICAL RESEARCH [8731]
		IRS NUMBER:				351345024
		STATE OF INCORPORATION:			IN
		FISCAL YEAR END:			0930

	BUSINESS ADDRESS:	
		STREET 1:		2701 KENT AVE
		CITY:			WEST LAFAYETT
		STATE:			IN
		ZIP:			47906-1382
		BUSINESS PHONE:		3174634527

	MAIL ADDRESS:	
		STREET 1:		2701 KENT AVENUE
		CITY:			WEST LAFAYETTE
		STATE:			IN
		ZIP:			47906-1382

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			KISSINGER CANDICE B
		CENTRAL INDEX KEY:			0001053613

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-23357
		FILM NUMBER:		08683777

	MAIL ADDRESS:	
		STREET 1:		2701 KENT AVENUE
		CITY:			WEST LAFAYETTE
		STATE:			IN
		ZIP:			47906

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			KISSINGER PETER
		CENTRAL INDEX KEY:			0001053615

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-23357
		FILM NUMBER:		08683778

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		7654634527

	MAIL ADDRESS:	
		STREET 1:		2701 KENT AVENUE
		CITY:			WEST LAFAYETTE
		STATE:			IN
		ZIP:			47906
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>FORM 4 -
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-03-10</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000720154</issuerCik>
        <issuerName>BIOANALYTICAL SYSTEMS INC</issuerName>
        <issuerTradingSymbol>BASI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001053615</rptOwnerCik>
            <rptOwnerName>KISSINGER PETER</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>111 LORENE PLACE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>WEST LAFAYETTE</rptOwnerCity>
            <rptOwnerState>IN</rptOwnerState>
            <rptOwnerZipCode>47906</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001053613</rptOwnerCik>
            <rptOwnerName>KISSINGER CANDICE B</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>111 LORENE PLACE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>WEST LAFAYETTE</rptOwnerCity>
            <rptOwnerState>IN</rptOwnerState>
            <rptOwnerZipCode>47906</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2008-03-10</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>200</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>6.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1024057</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>848220</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">Shares sold were held by Peter T. Kissinger individually; direct holdings of Peter T. Kissinger after this transaction include 595,910 shares held jointly with Candice B. Kissinger.  Shares that are reported as individually held by Candice B. Kissinger or held jointly by Candice B. Kissinger and her children are deemed to be indirectly held by Peter T. Kissinger.</footnote>
        <footnote id="F2">Shares held directly by Candice B. Kissinger; includes 595,910 shares held jointly by Peter T. Kissinger and Candice B. Kissinger and 1,354 shares held jointly by Candice B. Kissinger and her children.  Shares that are reported as individually held by Peter T. Kissinger are deemed to be indirectly held by Candice B. Kissinger.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Lina Reeves-Kerner, attorney-in-fact for Peter T. Kissinger</signatureName>
        <signatureDate>2008-03-12</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Lina Reeves-Kerner, attorney-in-fact for Candice B. Kissinger</signatureName>
        <signatureDate>2008-03-12</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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