Androgens, including testosterone, are excreted in urine after being sulfated and glucoronidated

Phase 2 conjugation of androgens, as evidenced by conjugate presence in urine

Bottom line: Conversion of androgens to estrogens via aromatase (CYP19) is not the only means of reducing androgens. Androgens are sulfated and glucoronidated also.

Source: http://www.deepdyve.com/lp/springer-journal/free-glucuronic-and-sulfate-testosterone-epitestosterone-and-riemCAf0GZ?key=springer_journal