Its like a locker room old wives tail. I don't understand how it is common knowledge that Fina is toxic to the kidneys. I have heard that it stemed from the late Dan Duchaine who confused lower back water retention to kidney pain and associated it with some kind of glue that is used to bind the pellets. I assure you - THERE IS NO GLUE. It is good old yellow number 5 (completely harmless) and they are pressure packed.

Fina, aka Trenbolone Acetate, is a highly androgenic (more than testosterone) and anabolic steroid. Your major concerns should be from the androgenocity. Liver values are not really a concern with injectables (used in reasonable amounts - and that's a pretty forgiving amount) - your biggest concerns are pretty much BPH and Cholesterol values.