When is the best time of day to take the fsh, lh and estradoil labs when trying to determine if i have low testosterone? t level is don't in the am...

Morning: All of these tests should be done in the morning, preferrably by a reference endocrine lab rather than a local lab. The Estradiol level is of very limited value in your evaluation. If you are significantly overweight, you should get a "sex hormone binding globulin" level, as this may be low, causing your total testosterone level to be low, but free or bioavailable testosterone levels may be normal.