Thank you very much for correcting my error caused by not plotting the data and playing the relative % increase on the p-values vs absolute numbers and correlation. Excellent work and poor work on my part to try an erroneous shortcut. Now my question is the functional relationship between true MCR and SHBG. Or is there some other parameters that govern MCR that are just correlated with SHBG (causation vs correlation)?
My own experience with oxandrolone tells me that SHBG has nothing to do with it. Then we are back to absorption kinetics of the testosterone ester and the flip flop kinetics: diffusion, lymphatic activity, all the stuff in the nandrolone depot paper @madman posted.
Fun, the SHBG status and age of the volunteers in the study (combined with basing MCR on Total T) can really lead people on a wild goose chase on what's driving what.
Thank you @Cataceous, always appreciate being around people smarter than myself!
An interlaboratory study of the pharmacokinetics of testosterone following intramuscular administration to Thoroughbred horses