concentration

Friends, what concentration of test enanthate, propionate and trenbolone acetate do you do? I have heard that to do higher concentrations the body does NOT absorb everything. Does it proceed? Truth or myth?

What are the factors influencing how strong you brew your homebrews? Is it different for each compound and for different carrier oils? If I'm brewing test C and some EQ should I try to make the concentrations so that I can get enough of both in one syringe and still inject into ventrogluteal...