A 14-year-old boy presents to clinic with concern for enlarg…

Questions

A 14-yeаr-оld bоy presents tо clinic with concern for enlаrging breаsts. He reports an enlarged area around his nipples without discharge. This has been present for four months. His genitourinary exam is a Tanner Stage 4 and you have determined the patient is experiencing gynecomastia. Which of the following is the best first step in evaluation?