How low can you go on HCG without atrophy?

[SnowyMiami]

We know from Andrea D. Coviello's work that you can combine low dose HCG with exogenous testosterone and maintain sperm creation. At 250 units 3x week, intratesticular testosterone was 100% of normal levels. At 125 units 3x week, intratesticular testosterone was about 50% of normal levels.

In the following study in rats, 20% of normal intratesticular testosterone maintained normal sperm creation so 125 IU SHOULD be plenty in theory. Has anyone went this low and not experienced atrophy or low sperm count? I would like to keep HCG to a minimum because I feel weird on it.

ZirkinBR,SantulliR,AwoniyiCA,EwingLL1989Maintenanceofadvanced spermatogenic cells in the adult rat testis: quantitative relationship to testosterone concentration within the testis. Endocrinology 124:3043–3049

 

[ThinBulk]

125iu should work, but I would guess not at full efficiency. There's no data I found for or against people staying fertile at that dose. The data seems to say that 100% of normal intratesticular testosterone is necessary for full sperm production. Lower ranges have lower results that also have a huge variance.

You could always get an analysis done, and another 4 months into trt. 125iu should save you from the majority of atrophy, making bounce back easier if you wanted to up the dose to 250+. Tons of guys here have come back from years of cycling to being fertile with HCG.