I have some information about Testosterone measurement. I am 75, and Endocrinologists at Baylor
College of Medicine, Houston, Texas, set-up a trial for Testosterone measurement for elderly guys like me. I was asked to give a small amount of blood so my Testosterone level could be measured. I was later told that I did not qualify for the trial because my Testosterone level was too high for the trial. For comparison, my Testosterone measures 590 ng/dL(nanograms per deciliters).