Ust got back my estradiol results .... <10 pg/ml. The range was 11-20 (not sure about high value).
What does this mean? I think that it is being used to confirm low activity in the testes. Correct?

Just a curious question.... Is there a reason that they are testing total test and estradiol? My understanding is that the free amount is the important number. My theory is that they do not understand completely.. I cannot believe that an endocrinologist does not know this... Or, maybe I'm confused.