of the 3 basic forms of test - propionate, enanthate, and cypionate:
propionate has 83 mg of test per 100 mg.
enanthate has 73 mg of test per 100 mg.
cypionate has 69 mg of test per 100 mg.
the difference to 100 mg is the ester. so cyp has the most ester.
sustanon is a blend that usually contains:
30 mgs Testosterone Propionate
60mgs testosterone Phenylpropionate
60mgs testosterone Isocaproate
100mgs testosterone Decanoate