-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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<SEC-DOCUMENT>0000927946-04-000178.txt : 20040820
<SEC-HEADER>0000927946-04-000178.hdr.sgml : 20040820
<ACCEPTANCE-DATETIME>20040820171828
ACCESSION NUMBER:		0000927946-04-000178
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20040819
FILED AS OF DATE:		20040820

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:			DOSTER GARYL W
		CENTRAL INDEX KEY:			0001233706

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-23357
		FILM NUMBER:		04989651

	BUSINESS ADDRESS:	
		STREET 1:		8242 BOWLINE COURT
		CITY:			INDIANAPOLIS
		STATE:			IN
		ZIP:			46236
		BUSINESS PHONE:		3178235121

	MAIL ADDRESS:	
		STREET 1:		8242 BOWLINE COURT
		CITY:			INDIANAPOLIS
		STATE:			IN
		ZIP:			46236
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>form4_ex.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2004-08-19</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001233706</rptOwnerCik>
            <rptOwnerName>DOSTER GARYL W</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>8242 BOWLINE COURT</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>INDIANAPOLIS</rptOwnerCity>
            <rptOwnerState>IN</rptOwnerState>
            <rptOwnerZipCode>46236</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Option to Purchase Common Shares</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>4.57</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2004-08-19</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>5000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2014-08-19</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Shares</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>5000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">50% of the option vests on 2/19/2005 and the remaining 50% vests on 8/19/2005.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Lina Reeves-Kerner, Attorney-in-fact</signatureName>
        <signatureDate>2004-08-20</signatureDate>
    </ownerSignature>
</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>exhibit24.htm
<DESCRIPTION>EXHIBIT 24
<TEXT>

<HTML>
<HEAD>
<TITLE>Power of Attorney - Exhibit 24</TITLE>
</HEAD>
<BODY>


<!-- MARKER FORMAT-SHEET="ARTICLE bold" FSL="Workstation" -->
<H1 ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>
LIMITED POWER OF ATTORNEY FOR<BR>
SECTION 16 REPORTING OBLIGATIONS</FONT></H1>
<BR>

<!-- MARKER FORMAT-SHEET="Para Indent Lv 0-TNR" FSL="Workstation" -->
<P ALIGN=JUSTIFY><FONT FACE="Times New Roman, Times, Serif" SIZE=2>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Know all by these presents, that
the undersigned hereby makes, constitutes and appoints each of Peter T.
Kissinger and Lina Reeves-Kerner, each acting individually, as the
undersigned&#146;s true and lawful attorney-in-fact, with full power and
authority as hereinafter described on behalf of and in the name, place and stead
of the undersigned to:</FONT></P>


<P align=justify><FONT FACE="Times New Roman, Times, Serif" size=2>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
prepare, execute, acknowledge, deliver and file Forms&nbsp;3, 4, and 5
(including any amendments thereto) with respect to the securities of
Bioanalytical Systems, Inc., an Indiana corporation (the &#147;Company&#148;),
with the United States Securities and Exchange Commission, any national
securities exchanges and the Company, as considered necessary or advisable under
Section&nbsp;16(a) of the Securities Exchange Act of 1934 and the rules and
regulations promulgated thereunder, as amended from time to time (the
&#147;Exchange Act&#148;);</font></P>

<P align=justify><FONT FACE="Times New Roman, Times, Serif" size=2>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
seek or obtain, as the undersigned&#146;s representative and on the
undersigned&#146;s behalf, information on transactions in the Company&#146;s
securities from any third party, including brokers, employee benefit plan
administrators and trustees, and the undersigned hereby authorizes any such
person to release any such information to each of the undersigned&#146;s
attorneys-in-fact appointed by this Limited Power of Attorney and approves and
ratifies any such release of information; and</font></P>

<P align=justify><FONT FACE="Times New Roman, Times, Serif" size=2>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; perform any and all other
acts which in the discretion of such attorney-in-fact are necessary or desirable
for and on behalf of the undersigned in connection with the foregoing.</font></P>

<P align=justify><FONT FACE="Times New Roman, Times, Serif" size=2>
The undersigned acknowledges that:</font></P>

<P align=justify><FONT FACE="Times New Roman, Times, Serif" size=2>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
this Limited Power of Attorney authorizes, but does not require, each such
attorney-in-fact to act in their discretion on information provided to such
attorney-in-fact without independent verification of such information;
</font></P>


<P align=justify><FONT FACE="Times New Roman, Times, Serif" size=2>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
any documents prepared and/or executed by either such attorney-in-fact on behalf
of the undersigned pursuant to this Limited Power of Attorney will be in such
form and will contain such information and disclosure as such attorney-in-fact,
in his or her discretion, deems necessary or desirable;</font></P>

<P align=justify><FONT FACE="Times New Roman, Times, Serif" size=2>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; neither the Company nor any
of such attorneys-in-fact assumes (i) any liability for the undersigned&#146;s
responsibility to comply with the requirement of the Exchange Act, (ii) any
liability of the undersigned for any failure to comply with such requirements,
or (iii) any obligation or liability of the undersigned for profit disgorgement
under Section 16(b) of the Exchange Act; and
</font></P>

<P align=justify><FONT FACE="Times New Roman, Times, Serif" size=2>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(4)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; this Limited Power of
Attorney does not relieve the undersigned from responsibility for compliance
with the undersigned&#146;s obligations under the Exchange Act, including
without limitation the reporting requirements under Section 16 of the Exchange
Act.</font></P>



<PAGE>



<!-- MARKER FORMAT-SHEET="Para Indent Lv 0-TNR" FSL="Workstation" -->
<P ALIGN=JUSTIFY><FONT FACE="Times New Roman, Times, Serif" SIZE=2>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The undersigned hereby gives and
grants each of the foregoing attorneys-in-fact full power and authority to do
and perform all and every act and thing whatsoever requisite, necessary or
appropriate to be done in and about the foregoing matters as fully to all
intents and purposes as the undersigned might or could do if present, hereby
ratifying all that each such attorney-in-fact of, for and on behalf of the
undersigned, shall lawfully do or cause to be done by virtue of this Limited
Power of Attorney.</FONT></P>

<!-- MARKER FORMAT-SHEET="Para Indent Lv 0-TNR" FSL="Workstation" -->
<P ALIGN=JUSTIFY><FONT FACE="Times New Roman, Times, Serif" SIZE=2>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This Limited Power of Attorney
shall remain in full force and effect until revoked by the undersigned in a
signed writing delivered to each such attorney-in-fact.</FONT></P>

<!-- MARKER FORMAT-SHEET="Para Indent Lv 0-TNR" FSL="Default" -->
<P ALIGN=JUSTIFY><FONT FACE="Times New Roman, Times, Serif" SIZE=2>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;IN WITNESS WHEREOF, the
undersigned has caused this Limited Power of Attorney to be executed as of this
14th day of August, 2004.</FONT></P>


<!-- MARKER FORMAT-SHEET="Signature Block w/Company Name" FSL="Workstation" -->
<TABLE WIDTH=100% CELLPADDING=0 CELLSPACING=0 BORDER=0>
<TR VALIGN=TOP>
<TD WIDTH=60%><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH=40%><FONT FACE="Times New Roman, Times, Serif" SIZE=2>
/s/ Gayl Doster<BR>
<HR WIDTH=300 ALIGN=LEFT>
Signature
<BR>
<BR>

Gayl Doster<BR>
<HR WIDTH=300 ALIGN=LEFT>
Print Name</FONT></TD>
</TR>
</TABLE>
<BR>
<BR>


<!-- MARKER FORMAT-SHEET="Signature Block w/Company Name" FSL="Workstation" -->
<TABLE WIDTH=55% CELLPADDING=0 CELLSPACING=0 BORDER=0>
<TR VALIGN=TOP>
<TD WIDTH=15%><FONT FACE="Times New Roman, Times, Serif" SIZE=2>
STATE OF INDIANA</FONT></TD>
<TD WIDTH=1%><FONT FACE="Times New Roman, Times, Serif" SIZE=2>
)</FONT></TD>
</TR>
<TR VALIGN=TOP>
<TD WIDTH=1%><FONT FACE="Times New Roman, Times, Serif" SIZE=2>
</FONT></TD>
<TD WIDTH=15%><FONT FACE="Times New Roman, Times, Serif" SIZE=2>
)</FONT></TD>
</tr>
<TR VALIGN=TOP>
<TD WIDTH=15%><FONT FACE="Times New Roman, Times, Serif" SIZE=2>
COUNTY OF Steuben</FONT></TD>
<TD WIDTH=1%><FONT FACE="Times New Roman, Times, Serif" SIZE=2>
)</FONT></TD>
</TR>
</TABLE>
<BR>


<P align=justify><FONT FACE="Times New Roman, Times, Serif" size=2>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;On this 14th day of
August, 2004, Gayl Doster personally appeared before me, and
acknowledged that s/he executed the foregoing instrument for the purposes
therein contained.</font></P>

<P align=justify><FONT FACE="Times New Roman, Times, Serif" size=2>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;IN WITNESS WHEREOF, I have
hereunto set my hand and official seal.</font></P>

<!-- MARKER FORMAT-SHEET="Signature Block w/Company Name" FSL="Workstation" -->
<TABLE WIDTH=100% CELLPADDING=0 CELLSPACING=0 BORDER=0>
<TR VALIGN=TOP>
<TD WIDTH=60%><FONT FACE="Times New Roman, Times, Serif" SIZE=2><BR>
<BR>
<BR>
<BR>
<BR>
<BR>
<BR>
<BR>
<BR>
<BR>
My Commission Expires:<BR>
<BR>
09-08-2008<BR>
</FONT><HR WIDTH=200 ALIGN=LEFT></TD>
<TD WIDTH=40%><FONT FACE="Times New Roman, Times, Serif" SIZE=2>
<BR>
<BR>
/s/ Kathy Kope<BR>
<HR WIDTH=300 ALIGN=LEFT>
Signature<BR>
<BR>
<BR>
Kathy Kope<BR>
<HR WIDTH=300 ALIGN=LEFT>
Printed&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp;&nbsp;Notary Public<BR>
<BR>
<BR>
County of Residence:<BR>
<BR>
Steuben<BR>
</FONT><HR WIDTH=200 ALIGN=LEFT></TD>
</TR>
</TABLE>
<BR>


<BR>
<BR>
<BR>
<P ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" size=1>
&#150;2&#150;</font></P>


</BODY>
</HTML>

</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----
