Depending from symptoms, 500 should be treated somehow (IMO), usualy natural ways can increase test enough, if not then its HCG time. Clomid as TRT is not an option (IMO) as usualy people get numbers but nothing else, and estrogen on clomid is all over the place. I mean what does it mean if I have a piece of paper on which says TT 900 ng/dl if I feel like I have 300 ng/dl?
Also (IMO) bioavailable and free test are more interesting than TT, and most of endos accept this- Dr Romeo Marianco is one of the exceptions, but his patients have TT in pretty high numbers, so I guess they still have some decent free test.