What is TRT and What is NOT TRT

And even more data from Bhasin’s work in the 2000s:
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The ordinate (y-axis) is mean (AUC/delta t) TT level which I calculated as ~1.6*TT(trough) from the papers.

Understanding serum mean TT level (mean calculated as AUC/delta t) allows one to very quickly conclude 200 mg/week TC dosage (or even 150 mg/week) brings an older guy way above reference range.

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