I see and definitely believe the effects of the neurotransmitters, and hormones in the two previous slides relative to sexual functioning. What I can't seem to find in searches, exactly for instance is high Prolactin? Is it truly high on the scale used to measure based on a given labs results? Or is it like many other things, an individual patient's level interpreted in conjunction with symptoms, and clinical picture? So, for instance would a patient with issues of penile sensitivity, anorgasmia, or perhaps even difficulty keeping a quality erection with a Prolactin level of 13.5ng/ml on a "normal" scale of 2.0 ng/ml to 18.0 ng/ml be high enough to offer cabergoline? Are there clinically beneficial ways to boost serotonin or oxytocin? Is it fair to suggest, that of all the benefits of HRT, improvement of ED is perhaps the one benefit that requires more time, and patience, and finding the minimal level of both total T and free T as well as time to "heal"?