dosing adjustment based on concentration

[miked187]

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...

[ickythump]

phew... my head now hurts as well, but from the post!! you could easily figure it out with some math not diluting it... if you want 200/mg per draw then you would use .8 cc's, which is 20% less than a full cc, 200 being 20% less that 250....I could explain the math but you can probably just skip that

[Bio-Active]

Just do the math. 250 mg/ml equals 25 mg per line on a 3cc syringe. 200 mg/ml equals 20 mg each line. Just pull to the desired dose

[redhawk01]

Divide the dose by the concentration.
200 divided by 250 = .8/ml

[miked187]

makes sense now, thanks