I've consulted with 2 doctors, who supposedly have many years experience in the field of andrology. One of the them was an endo and the other a GP who specializes in male hormones.
When the GP tested my E2, it was well below the bottom of the normal reference range for an adult male. When I asked him if this is a concern, he said "we only worry about estradiol that is too high".
The endo did not test estradiol at all. When I asked him why, he said he only tests for it if he suspects it is too high. He also did not think having estradiol that is too low to be a matter of concern.
When I asked the "male hormone specialist" GP why he does not test for DHT, he said "that's a pro hormone. It's a hormone that eventually gets converted to testosterone. I can test for it if you like, but normally I only test for testosterone". I even said "dihydrotestosterone", just so he didn't confuse it with DHEA, which he obviously did lol.
Finally, when I suggested adding hCG as a way of increasing my estradiol level, he said "no that won't work. Generally hCG doesn't increase estradiol".
Are both doctors wrong about everything?