Form: 3

Initial statement of beneficial ownership of securities

March 5, 2003

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, DC 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility
Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

 Estimated average burden
hours per response. . . .0.5
1. Name and Address of Reporting Person*
De Souza, Errol B. 		2. Date of Event
Requiring Statement (Month/Day/Year)
02/25/03

4. Issuer Name andTicker or Trading Symbol
IDEXX Laboratories, Inc. ("IDXX")

(Last)             (First)            (Middle)

14 Stone Creek Lane 		3. I.R.S. Identification Number of Reporting Person, if an entity (voluntary)

5. Relationship of Reporting Person(s) to Issuer
                      (Check all applicable)
 [X]  Director                   [_]  10% Owner
 [_]  Officer (give Below)    [_]   Other (specify title below)


6. If Amendment, Date of Original (Month/Year)
(Street)
Basking Ridge, NJ 07920 		7. Individual or Joint/Group Filing
(Check Applicable Line)
[X]  Form filed by One Reporting Person
[_] Form filed by More than One Reporting Person
(City)             (State)             (Zip) Table I — Non-Derivative Securities Beneficially Owned
1. Title of Security
(Instr.4) 		2.Amount of Securities
Beneficially Owned
(Instr. 4)

3. Ownership Form:
Direct (D) or
Indirect (I) (Instr. 5)

4. Nature of Indirect Beneficial Ownership
(Instr. 5)
No Securities Owned         
         
         
         
         
        
        
        

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5(b)(v).

Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently vaild OMB Number. (Over)
SEC1473 (7-02)


FORM 3 (continued)
 Table II — Derivative Securities Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities) 		 
1.Title of Derivative Security
(Instr.4)		 2.Date Exer-
cisable and
Expiration
Date
(Month/Day/Year)		 3. Title and Amount of Securities UnderlyingDerivative Security(Instr. 4)
 4. Conver-
sion or
Exercise
Price of
Deri
-vative
Security		 5. Owner-
ship
Form of
Deriv-
ative
Security:
Direct (D) or
Indirect (I)
(Instr. 5)		 6. Nature of Indirect
Beneficial Ownership (Instr. 5)
Date Exer-
cisable 		Expira-
Date 		Title
Amont
or
Number
of
Shares
                   
                   
                   
                   
                   
                   
                     

Explanation of Responses:
 
                        
   Conan R. Deady, Attorney-in-Fact For Errol B. De Souza
**Signature of Reporting Person
March 5, 2003
Date

**


Note:

Intentional misstatements or omissions of facts constitute Federal Criminal Violations.
See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

File three copies of this Form, one of which must be manually signed.If space provided is insufficient,
see Instruction 6 for procedure.

  
Potential persons who are to respond to the collection of information contained in this form are not
required to respond unless the form displays a currently valid OMB Number. 		Page 2