The question is about how the concentration affects how much liquid is drawn, and how to adjust dose based on concentration. Noob stuff I'd bet, but I can't find any ref anywhere to help clear the calc's up in my head.


I have 10mL bottle of test-cyp that is 200mg/mL, I pull 1cc/wk and shoot it. The bottle contains 2000mL (10mL * 200mg in each mL = 2000)

If I then buy a 10ml bottle of test-cyp that is 250mg/mL I end up holding a product that provides a higher concentration (2500mL total in the bottle) of T in the same 1cc volume/a stronger dose.

So I'd want to knock down the volume of liquid in order to match the dose that comes out of the 200mg/mL bottle.

How do I go about figuring this out? Is there a chart of something? Seems like knowledge of these sort of conversion things need to be 2nd nature to avoid being a danger to yourself. Ugh, my brain hurts trying to get my head around this...