DEXCOM INC - FORM 8-K - EX-23.1 - CONSENT OF ERNST & YOUNG LLP - November 4, 2009

Attached files

file filename
EX-99.1 - SELECTED FINANCIAL DATA - DEXCOM INCdex991.htm
EX-99.3 - FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA - DEXCOM INCdex993.htm
EX-99.2 - MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OP - DEXCOM INCdex992.htm
8-K - FORM 8-K RESTATEMENT OF PRIOR YEAR FINANCIALS - DEXCOM INCd8k.htm

Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in the Registration Statements (Form S-8 Nos 333-149734, 333-145159, 333-138174, 333-124059, and 333-158993 pertaining to the DexCom, Inc. 2005 Equity Incentive Plan, 2005 Employee Stock Purchase Plan, and 1999 Stock Option Plan, and Form S-3 Nos 333-157024, 333-155391, and 333-143560) of DexCom, Inc. of our report dated March 3, 2009 (except for Note 1, as to which the date is November 4, 2009) with respect to the consolidated financial statements and schedule of DexCom, Inc., for the year ended December 31, 2008, included in the Current Report (Form 8-K) of DexCom, Inc., dated November 4, 2009, filed with the Securities and Exchange Commission.

/s/    Ernst & Young LLP

San Diego, California

November 4, 2009

DEXCOM INC Reports