JustAskin has been going to one of the big name online docs that has been doing this stuff forever. And here is what he is hearing regarding getting your estradiol tested:
"One word of advise, don't believe all E2 tests are equal, the best is LabCorp test#140244
I was doing Quest and they were showing me as being to high so I kept taking anastrozole an not feeling any better, I checked on allthingsmale forum and found most had used the one above and with this one was able to get correct reading and adj. to the proper level. (If I had know this it would have saved 2-3 month and money)"