Ownership Submission
FORM 3
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 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)
1. Name and Address of Reporting Person *
  McLeod Scot M
 2. Date of Event Requiring Statement (Month/Day/Year)
07/02/2007		 3. Issuer Name and Ticker or Trading Symbol
QUIDEL CORP /DE/ [QDEL]
(Last)
(First)
(Middle)
10165 MCKELLAR COURT		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Sr. VP - Operations
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

SAN DIEGO, CA 92121		 6. 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)
Common Stock 41,287
D
 

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)		 2. Date Exercisable and Expiration Date
(Month/Day/Year)		 3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)		 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		 6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Incentive Stock Option   (1) 03/19/2014 Common Stock 4,688 $ 7.5 D  
Incentive Stock Option   (2) 03/21/2016 Common Stock 7,781 $ 12.23 D  
Non-Qualified Stock Option   (3) 03/21/2016 Common Stock 469 $ 12.23 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
McLeod Scot M
10165 MCKELLAR COURT
SAN DIEGO, CA 92121		       Sr. VP - Operations  

Signatures

Robert J. Bujarski, Attorney-in-Fact for Scot M. McLeod 07/12/2007
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) The original grant for these options was for 11,352 shares. The grant date was 03/19/2004, and the vesting schedule is over four (4) years as follows: 25% on the first anniversary of the grant date and quarterly thereafter. As of the date hereof, 6,664 options have been exercised.
(2) The original grant for these options was for 9,906 shares. The grant date was 03/21/2006, and the vesting schedule is over four (4) years as follows: 25% on the first anniversary of the grant date and quarterly thereafter. As of the date hereof, 2,125 options have been exercised.
(3) The original grant for these options was for 1,094 shares. The grant date was 03/21/2006, and the vesting schedule is over four (4) years as follows: 25% on the first anniversary of the grant date and quarterly thereafter. As of the date hereof, 625 options have been exercised.

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