Need for evaluation: The choice of test would be directed by the initial evaluation of the cause of ed. Please see this site for possible causes of ed and related issues. http://www.mayoclinic.com/health/erectile-dysfunction/ds00162/dsection=causes.
Answered 8/28/2014
5.5k views
A few ideas: In a guy your age, two causes that are often overlooked are prolactinoma (serum prolactin) and hemochromatosis (serum ferritin).
Answered 8/28/2014
3.8k views
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