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EXHIBIT 23.1
CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS
We consent to the incorporation by reference in the Registration Statement (Form
S-8) pertaining to the 2000 Equity Incentive Plan of ViroLogic, Inc. of our
report dated February 4, 2000, except as to Notes 1 and 9 for which the date is
April 17, 2000, with respect to the financial statements of ViroLogic, Inc.
included in its Registration Statement on Form S-1 for the year ended December
31, 1999, filed with the Securities and Exchange Commission.
/s/ ERNST & YOUNG LLP
Ernst & Young LLP
Palo Alto, California
August 4, 2000
