yes I'm afraid its the only one offered by my doctors and they are free of charge, so can't complain, i then send the results to my trt specialist to take a look at, he only really concerned with haematocrit and haemoglobin as a precaution, i don't think he would mind if i was on 3/400mg a week as long as i felt ok and my bloods were ok, so its unto me to try and dial myself in as best as i can