hi. pharmacist.
its about 10mg per day of pure testosterone, making it 70mg a week.
the reason you get the 70mg vs 100mg confusion is because if youre injecting testosterone in the form of something like testosterone decanoate or whatever, you need to inject about 100mg of the testosterone decanoate to get 70mg of free, pure testosterone freeing itself from the decanoate molecule and circulating through your blood
if you want to be really exact, look up the molecular weight of decanoate/enanthate/whatever and compare it ot the molecular weight of the testosterone molecule, to work out what proportion of the mg dose youre injecting is actual testosterone
cheerios