Evidently, these researchers aren't buying the conclusions in reference 10 [Rate and Extent of Recovery from Reproductive and Cardiac Dysfunction Due to Androgen Abuse in Men] of the paper above:
They noted a very significant difference between former AAS users / non users (4.4 nM)!
Letter to the Editor: “Rate and Extent of Recovery from Reproductive and Cardiac Dysfunction Due to Androgen Abuse in Men”
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Good reason to THINK before you go on TRT. Although you may start voluntarily, you may have to stay on involuntarily! I can tell you going off TRT and hitting 87 ng/dL is no fun.