HCG has two primary roles during HRT. It mimics LH and stimulates the Leydig cells in the testicles to produce endogenous testoterone, this counteracts the negative feedback system and maintains testosterone production. It also prevents or reduces testicular atrophy.
Im taking 100mg of enanthate a week. My Dr said not to bother with the pct stuff right now. He consulted with an endocronologist who just told him to have me stay on 100mgs a week.
I think I'll broach the subject of doint some hcg every now an then tho. Im just happy he finally gave me the test.