depends on what you are using?...sust is 250mgs/ml cyp is mostly 200mgs/ml prop is usually 50-100mgs/ml...what i am getting at is we need to know what specific compound you are asking us about
1 cc is a measurement ! The product you using should say on it how many MG , 200 mg of Test is 200mg a cc. Some Test's are 250 mg , so that's 250 mg a cc. Every bottle of Eq,Test,Deca, should be marked and is different .
don't listen to these guys - it is ALWAYS 30mg in each cc.
(a cc is a cubic centimeter - which means that it is a way to measure volume. a mg is a milligram, which is a unit of mass. due to the nature of how the various chemicals bind and and their molecular size, the amount that can be held per cc varies)