It is usually the same stuff (Testosterone) to develop a male body, only that they can be abused by athletic cheaters. Hence the hard control. Doctors also must know the patient really suffers from this disorder and not try to get hold of testosterone. One needs to know if the patient also always wished he had a male body already at birth. That's a clear sign. At least in my hypothesis. I had some experience with Norwegian medical science. I am not sure they try hard enough TBH.