I saw on a supplier website a lab offering a 10ml vial of 120mg test E / 120mg test C / 160mg deca.

Can anyone enlighten me as to what is the benefit of mixing test E and test C?

I can see the potential convenience of having the test and deca pre-mixed, and the overall proportion of test to deca seems reasonable. However, I don't understand why you would mix test E and C, given that they have similar half lives. I guess it might be something to do with the test E kicking in slightly faster than the test C? But if you are pinning every day or every couple of days, I don't understand why that would that make any difference. Also, I would have thought it would be better to keep the test and deca separate, so that you can adjust the level of each as necessary, so that you aren't tied to a particular ratio of test to deca.

Sorry if this is a daft question and I'm missing something! Just can't see the benefit, and this stood out as an unusual pre-mix.

Any thoughts much appreciated.