i disagree with Brandon Walsh saying that levels decline after 26 to almost "non existent" at 40............BS!

I have read studies where men in there 60s are still at 500-600ng/dl

im not sayin there isnt a decrease, but maybe its more of a SHBG increase than a decrease in serum level.
I have 50 year old frind that tested at 425. not high, but not "non existant"