1. Does Testosterone Have a Role in Erectile Function?
Nasser Mikhail, MD, MSc 
The American Journal of Medicine 
Volume 119, Issue 5, Pages (May 2006)
DOI: /j.amjmed
Copyright © 2006 Elsevier Inc. Terms and Conditions

2. Figure
Initial work-up for men with symptoms suggestive of hypogonadism (including ED). ED = erectile dysfunction; FSH = follicle-stimulating hormone; LH = luteinizing hormone. *See text for conditions requiring measurement of serum free or bioavailable testosterone. **In the elderly and obese men with low testosterone levels, FSH and LH are usually in the low-normal or within the normal range (see text). ***For a more detailed description of causes of hypogonadism, see reference.94
The American Journal of Medicine  , DOI: ( /j.amjmed )
Copyright © 2006 Elsevier Inc. Terms and Conditions