Item 2.02 Results of Operations and Financial Condition.

On January 4, 2013, Quidel Corporation issued a press release announcing certain preliminary results for its fourth quarter ended December 31, 2012, including preliminary revenues as well as information about SofiaŽ instrument placements. A copy of the press release is attached as Exhibit 99.1 to this current report on Form 8-K.

The information in this current report on Form 8-K, including the exhibit attached hereto, is being furnished and shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of such section. The information in this current report on Form 8-K shall not be incorporated by reference into any registration statement or other document pursuant to the Securities Act of 1933, as amended, except as expressly set forth by specific reference in such filing.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

The following exhibit is furnished with this current report on Form 8-K:

Exhibit Number Description of Exhibit

99.1 Press release, dated January 4, 2013.

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