UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 20549
                                    FORM 8-K
                                 CURRENT REPORT
     Pursuant to Section 13 OR 15(d) of the Securities Exchange Act of 1934


Date of Report (Date of earliest reported)  July 24, 2003
                                          ---------------


                                TheraSense, Inc.
                           --------------------------
             (Exact name of registrant as specified in its chapter)


              Delaware                     000-33139           94-3267373
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(State or other jurisdiction             (Commission          (IRS Employer
       of incorporation                  File Number)      Identification No.)



       1360 South Loop Road, Alameda, California                       94502
                                                                    ----------
       (Address of principal executive offices)                     (Zip Code)



Registrant's telephone number, including area code   (510) 749-5400
                                                  -----------------

                                 Not Applicable
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          (Former name or former address, if changed since last report)









ITEM 7: FINANCIAL STATEMENTS AND EXHIBITS

         (c) Exhibits

         99.1     Earnings Press Release, dated July 24, 2003

ITEM 9: REGULATION FD DISCLOSURE

         On July 24, 2003 the Company announced its financial results for the
Quarter ended June 30, 2003. A copy of the press release containing the
announcement is included as Exhibit 99.1 to this Current Report and is
incorporated herein by reference. The Company does not intend for this exhibit
to be incorporated by reference into future filings under the Securities
Exchange Act of 1934. The foregoing information is provided pursuant to Item 12
(Results of Operations and Financial Condition) of Form 8-K.









                                    SIGNATURE


Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.

Date: July 24, 2003                  THERASENSE, INC.


                                     By:  /s/ W. MARK LORTZ
                                          -------------------------------------
                                          W. Mark Lortz
                                          President, Chief Executive Officer
                                          and Chairman

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