<SUBMISSION>
<ACCESSION-NUMBER>0000874716-03-000091
<TYPE>S-8 POS
<PUBLIC-DOCUMENT-COUNT>1
<FILING-DATE>20030918
<EFFECTIVENESS-DATE>20030918
<FILER>
<COMPANY-DATA>
<CONFORMED-NAME>IDEXX LABORATORIES INC /DE
<CIK>0000874716
<ASSIGNED-SIC>2835
<IRS-NUMBER>010393723
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>S-8 POS
<ACT>33
<FILE-NUMBER>333-43170
<FILM-NUMBER>03901182
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>ONE IDEXX DRIVE
<CITY>WESTBROOK
<STATE>ME
<ZIP>04092-2041
<PHONE>2078560300
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>ONE IDEXX DRIVE
<CITY>WESTBROOK
<STATE>ME
<ZIP>04092-2041
</MAIL-ADDRESS>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>IDEXX CORP / DE
<DATE-CHANGED>19600201
</FORMER-COMPANY>
</FILER>
<DOCUMENT>
<TYPE>S-8 POS
<SEQUENCE>1
<FILENAME>pos1s8_2000dop.htm
<DESCRIPTION>POS NO. 1 S-8 (2000 DIRECTOR OPTION PLAN)
<TEXT>
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<TITLE>POS No. 1 S-8 (2000 DOP)</TITLE>
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<P ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>As Filed with the
Securities and Exchange Commission on September 18, 2003, Registration No.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>
Registration No. 333-43170 on August 7, 2000</FONT></P>

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<H1 ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>SECURITIES AND
EXCHANGE COMMISSION<BR>WASHINGTON, DC 20549  </FONT></H1>

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<H1 ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>POST-EFFECTIVE AMENDMENT NO. 1<BR>TO<BR>FORM S-8 </FONT></H1>

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<H1 ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>REGISTRATION STATEMENT
UNDER<BR>THE SECURITIES ACT OF 1933 </FONT></H1>

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<P ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE="2"><B>IDEXX LABORATORIES, INC.</B><BR>(Exact name of
registrant as specified in its charter) </FONT> </P>

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     <TH COLSPAN=2><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Delaware</FONT></TH>
     <TH COLSPAN=2><FONT FACE="Times New Roman, Times, Serif" SIZE=2>01-0393723</FONT></TH></TR>
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     <TD WIDTH=49% ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE="1">(State or other jurisdiction of incorporation or organization)<BR> </FONT></TD>
     <TD WIDTH=14% ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
     <TD WIDTH=49% ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE="1">(I.R.S. Employer Identification No.)<BR></FONT></TD>
     <TD WIDTH=2% ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD></TR>
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     <TD ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE="2"><B>One IDEXX Drive, Westbrook, Maine</B> </FONT></TD><TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
     <TD ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE="2"><B>04092</B> </FONT></TD><TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD></TR>
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     <TD ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE="1">(Address of principal executive offices)</FONT></TD><TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
     <TD ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE="1">(Zip Code)</FONT></TD><TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD></TR>
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     <TD ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2></FONT></TD><TD ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD></TR>
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<P ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE="2"><B>2000 DIRECTOR OPTION
PLAN </B><BR>(Full Title of the Plan) </FONT> </P>

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<P ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE="2"><B>Conan R. Deady, Esq.<BR>General
Counsel<BR>IDEXX Laboratories, Inc.<BR>One IDEXX Drive, Westbrook, Maine 04092</B><BR>(Name and Address of Agent For Service)</FONT> </P>

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<P ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE="2"><B>(207) 856-0300</B><BR>(Telephone number, including Area Code,
of Agent for Service) </FONT></P>



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<P><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant
to a registration statement on Form S-8 (the &#147;2000 Plan Registration Statement&#148;)
filed with the Commission on August 7, 2000 (File No. 333-43170), the Registrant registered 200,000 shares of Common
Stock, $.10 par value per share of IDEXX Laboratories, Inc. (the &#147;Company&#148;)
in connection with the Company&#146;s 2000
Director Option Plan (&#147;2000 Plan&#148;). The 2000 Plan Registration Statement covered
shares of Common Stock issuable upon the exercise of options granted under the 2000 Plan.
As of May 21, 2003, an aggregate of 82,390 shares of Common Stock covered by the 2000 Plan
Registration Statement had not previously been issued or were not subject to outstanding
stock options (the &#147;Unused 2000 Shares&#148;). </FONT></P>

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<P><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This
Post-Effective Amendment No. 1 to the 2000 Plan Registration Statement is being filed for
the purpose of transferring the Unused 2000 Shares to a new registration statement on Form
S-8 registering 1,850,000 shares of Common Stock issuable pursuant to stock based awards
to be issued under the Company&#146;s 2003 Stock Incentive Plan. </FONT></P>
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<A NAME=A002></A>
<H1 ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>SIGNATURES </FONT></H1>

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<P><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant
to Rule 478 under the Securities Act, the Registrant has duly caused this Post-Effective
Amendment No. 1 to the Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Westbrook, State of Maine on this
18th day of September, 2003. </FONT></P>

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     <TD WIDTH="50%"><FONT SIZE="2"></FONT></TD>
     <TD WIDTH="50%"><FONT SIZE="2"><B>IDEXX LABORATORIES, INC.</B> </FONT></TD></TR>
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     <TD><FONT SIZE="1">&nbsp;&nbsp;&nbsp;&nbsp;</FONT></TD>
     <TD><FONT SIZE="1">&nbsp;&nbsp;&nbsp;&nbsp;</FONT></TD></TR>
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     <TD><FONT SIZE="2"></FONT></TD>
     <TD><FONT SIZE="2">By: /s/ Conan R. Deady</FONT><HR WIDTH=100% SIZE=1 COLOR=BLACK NOSHADE></TD></TR>
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     <TD><FONT SIZE="2"></FONT></TD>
     <TD><FONT SIZE="2">Conan R. Deady<BR>
Vice President, General Counsel and<BR>Secretary</FONT></TD></TR>
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