Serum testosterone levels will be obtained in hypogonadal (serum testosterone <300 ng/dL) males receiving testosterone undecanoate capsules administered twice daily. Serum samples will be obtained consecutively in the morning on several days during one month of open-label treatment to confirm the time at which steady-state is reached.
The purpose of the study is to confirm how long (i.e., how many days) it takes to reach steady-state when testosterone undecanoate is administered twice daily.