I am prescribed 220 mg / a week. Sounds like a lot for a dr prescribed trt but it works out like this: I'm 235 lbs, 9% BF, 6'2. I pin 0.6 ml twice a week using insulin syringes. This keeps my total t at 717 ng/dl and my free t at 167.8 ng/dl (23.4%). Most importantly the insulin needles keep my E2 at 14.8 pg/ml. I do NOT need an AI. I feel good right now. When I started trt, I was using the recommended 25g 1" 3cc syringes. Dr started me with 200 mg once a week. This put my total t over 1200 and my free t was over 50%. (I don't have the numbers from my first couple of bloods right in front of me). But I felt like crap. Asked doc to check e2 and it was 70 something. Doc wanted to drop dose to curb the e2. So we did this trial and error dosing for a while until after I did an ass load of research determined that I was an exceedingly fast metabolizer. On my own, I moved to twice a week shots and then to insulin pins. Now I'm golden. I feel good. My wife doesn't feel like she is walking on eggshells around me and the kids are more comfortable around me. Sad that it took a year and a half to get dialed in, but I'm glad im there now. Regarding the half life of test cyp, the paperwork that comes with the script indicates that the half life is 8 days. I believe that is an average. Everyone is different. For my body, I believe the half life to be closer to 4 days. So pinning Every 3.5 days leads to much more stable blood levels. Not just stable t levels, but stable e2 levels. And a stable mood.
I really don't wanto start a debate about pinning frequency or slin pins - just telling you what works for me after a lot of trial and error.
