Hello to all. I am 39, good physical shape. I have been a believer in TRT for a long time after reading Nelson's book years ago. Unfortunately my family doctor was not on board with this kind of stuff even though my test levels were about 300-350 so I began self administering with 1 vial sustenon250/week for 2 years; 6 months ago I switched to test cyp. I recently discovered through a coworker that our insurance covers these treatments and I plan on seeing his doctor. Do I have to stop what I am doing to get baseline blood tests? for how long? Isn't this risky? The main reason I want to do this is to monitor estradiol levels better. I have had a very hard time dialing in what I need: too much/too little, lots of ups and downs with feelings/emotions and sex drive. For a while I thought I had a sweet spot figured out but it was short lived. Doing research on this site and talking to my coworker it seems that my body produces a little more est than others. I have felt arimidex working in as little as an hour (immediate sexual drive, decrease in anxiety, great person to be around-says my wife...) However a few days in those positive symptoms would slowly disappear and get worse, so I took more only to lose an erection during sex, embarassing feeling! So how long does it stay in the body? When should next dose be? How much? 1mg? 1/2mg? 1/4mg? 1X/week? 2X/week? I have experimented pretty much all...These are questions I will get answered through monitoring hopefully. Anybody here have similar experience in finding the right dose? Any good advise is appreciated....