EXHIBIT 23.1

                       CONSENT OF INDEPENDENT ACCOUNTANTS

We hereby consent to the use in the Registration Statement on Form S-8 of Sontra
Medical Corporation of our report dated March 14, 2002 except for the last
paragraph of Note 7 for which the date is April 22, 2002 relating to the
consolidated financial statements of ChoiceTel Communications, Inc. and its
subsidiary, which appears in such Registration Statement by reference. We also
consent to the reference to us under the heading "Experts" in such Registration
Statement.

                                               Schechter Dokken Kanter
                                               Andrews & Selcer Ltd.

                                               Minneapolis, Minnesota
                                               July 15, 2002