Cepheid Prices Follow-On Offering

SUNNYVALE, Calif., March 8 /PRNewswire-FirstCall/ -- Cepheid announced today that it has priced the public offering of 10,000,000 shares of its common stock at a price of $8.60 per share. The offering is made pursuant to an effective shelf registration statement previously filed with the Securities and Exchange Commission. In connection with this offering, the underwriters have been granted a 30-day option to purchase up to an additional 1,500,000 shares of common stock to cover over-allotments, if any. The offering is expected to close on March 13, 2006, subject to customary closing conditions.

UBS Investment Bank acted as sole book-running manager of this offering. William Blair & Company and Robert W. Baird & Co. acted as co-managers.

This press release shall not constitute an offer to sell or a solicitation of an offer to buy, nor shall there be any sale of these securities in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction. The offering of the shares of common stock may be made only by means of the prospectus supplement and related prospectus, copies of which may be obtained from UBS Investment Bank, Prospectus Department, 299 Park Avenue, New York, NY 10171.

About Cepheid

Cepheid , based in Sunnyvale, Calif., is a molecular diagnostics company that develops, manufactures, and markets fully-integrated systems for genetic analysis in the clinical, industrial and biothreat markets. The company’s systems enable rapid, sophisticated genetic testing for organisms and genetic-based diseases by automating otherwise complex manual laboratory procedures. The company’s easy-to-use systems integrate a number of complicated and time-intensive steps, including sample preparation, DNA amplification and detection, which enable the analysis of complex biological samples in its proprietary test cartridges. Through its strong molecular biology capabilities, the company is focusing on those applications where rapid molecular testing is particularly important, such as identifying infectious disease and cancer in the clinical market; food, agricultural, and environmental testing in the industrial market; and identifying bio-terrorism agents in the biothreat market. See http://www.cepheid.com for more information.

CONTACTS: At the Company: John L. Bishop John R. Sluis CEO, Cepheid CFO, Cepheid 408-541-4191 408-541-4191 john.bishop@cepheid.comjohn.sluis@cepheid.com At Financial Relations Board: Tricia Ross Investor/Analyst Information 617-520-7064 tross@financialrelationsboard.com

Cepheid

CONTACT: John L. Bishop, CEO, john.bishop@cepheid.com, or John R. Sluis,CFO, john.sluis@cepheid.com, both of Cepheid, +1-408-541-4191; orInvestor/Analyst Information, Tricia Ross of Financial Relations Board,+1-617-520-7064, tross@financialrelationsboard.com, for Cepheid

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