The strength on the vial does matter: T-Cyp 200 mg/ml is twice the strength as 100 mg/ml.

If you take 1 ml injection of T-C 100 mg/ml it is 1/2 the strength of T-C 200 mg/ml. Therefore, if you take .5 ml of T-C 200 mg/ml strength you are taking 100 mg/ml a week.

It seems if a doctor orders a dose of 100 mg/ml per week this would mean .5 ml injection of T-C 200 mg/ml.

OR

1 ml injection of T-Cyp maked 100 mg/ml. 

So the question remains is the common dose dr's and guys are referring to, of 1 ml of T-C, T-Cyp 100 mg/ml ;Which would be a dose of T-Cyp 100 mg/ml.

If all bottles ware T-Cyp 200 mg/ml I wouldn't be asking this question. One is twice the strength of the other.