A member asked:

I have erectile dysfunction. is this testosterone optimal? total 638 ng/dl , free 13.7 / 2, 15% bioavail: 322 / 50%. if not, how can i boost it ?

2 doctors weighed in across 2 answers
Dr. Francisco R. Rodriguez answered

Specializes in Urology

Testosterone: Testosterone levels vary during the day, yours are within normal range.

Answered 12/9/2013

5.3k views

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Dr. Bryan Treacy answered

Specializes in Gynecology

Not bad: Your testosterone levels are not bad, in the mid-range actually. It is important to note that testosterone levels have minimal effect on the erectile tissue of the penis. Ed is usually caused by reduced blood flow in the penile arteries of the corpus cavernosum. This is the basis for the viagra (sildenafil) type medications, to help sustain erections once they occur.

Answered 11/19/2013

4.7k views

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