UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 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 event reported): April 23, 2003

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

Delaware	000-33139	94-3267373
(State or other jurisdiction of incorporation)	(Commission File Number)	(I.R.S. Employer 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
(Former name or former address, if changed since last report)

ITEM 7: FINANCIAL STATEMENTS AND EXHIBITS

          (c) Exhibits

99.1 Earnings Press Release, dated April 23, 2003

ITEM 9: REGULATION FD DISCLOSURE

          On April 23, 2003 the Company announced its financial results for the Quarter ended March 31, 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: April 23, 2003 THERASENSE, INC.

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