Quote Originally Posted by imom
My understanding was that the standard test was sufficiently accurate for females with higher levels of E2, but any arithmetic error would become more significant when testing lower concentrations. If your E2 is high for a male then it is within the normal female range, and the test is probably sufficient. If your E2 is low by male standards, then the standard test might have a significant margin of error and you might benefit from the sensitive test. I read this on a lab website - I can try to find this link if anyone's interested.
According to life extensions web site, the standard E2 test is ok for males as the sensitive essay is only more accurate in the lower portion for those whom have low E2.

The above test I don't not believe is correct and probably total estrogen like mentioned by others.