The designation of any gear in a mg / ml indicates its strength.

SO if you're asking if test prop @100mg/ml has more test than test eth @100mg/ml, the answer is that they're both rated as the same strength.

No which one is more effective is a whole other story.

In any esterified compound such as most injectable anabolics (except suspensions)the ester is part of the molecule...ie. Test enanthate is a base of testosterone esterified with the medium-length enanthate chain that yields the desired half-life of the compound approximately 5-7 days. The longer the chain the longer the half-life. Acetate and prop are short and fast acting, enan, cyp, medium, decanoate, undecyclenate a bit longer and thus longer half-life. When a vial says 100mg of Test enan. it is 100mg of that molecule and the enanthate ester comprises a portion (28%) of that molecule so of the 100mg of T enan only 72mg are testosterone. In suspensions where there is no ester 100mg is 100mg so really if you do 1 gram/week enanthate it is technically 720 grams of test, whereas propionate being a smaller chain ester is about 840 and suspension would be a full 1000mg...it can become a somewhat substantial difference. Of course not all product have what they claim anyway..T200 is supposed to be 200mg/ml T enan, but usually runs between 150-175mg/ml and so one should take that into account there. The shit is also underdosed in total mls usually averaging like 8.5 mls. Comprende???

later

"Using nandralone as an example, a proprionate ester (with 3 carbons) would break down fairly quick and clear the body with an anabolic versus androgenic rating of 10:1. But an undeconate (11 carbons) would hang on and would have a ratio of 32:1!"

Using testosterone as the base drug, all references show that the ratio remains 1:1 no matter the ester, or non-ester, even methyltest remains 1:1. This shows that it is the base not the ester that is what is relevant.

In the case of short vs. long esters, you change the pharmacokinetics, since short esters are released faster and therefore excreted faster. This however does not affect it's potency, since one compensates for this rapid excretion with more frequent administrations. In reality, you get higher peak levels with equivalent concentrations, i.e. 200mg of test. propionate should give higher peak levels in the body than 200mg of enanthate, only prop will be removed at a faster rate, thus the need for earlier injections. For better blood levels, the long acting esters should have a high loading dose, followed by lower weekly or twice weekly injections.

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Every morning in Africa, a gazelle wakes up. It realizes that it must run faster than the fastest lion or it will be killed.
Every morning in Africa, a lion wakes up. It realizes that it must run faster than the slowest gazelle, or it will starve to death.

The moral?