From that abstract you posted, the patient was getting daily Test Prop injections, eventually lengthening to weekly but his erections returned, quickly; 24 hours after the first injection. A painful erection, too. But his response to T didn't take months. And his erectile function continued in relation to the dose he received. However, at the end of the abstract, his doctor stated that, initially, a patient should receive 50 mg, daily, for two weeks; I guess to jump start the process, then, weekly injections. As I wrote, I was trying to extrapolate how that protocol would or could be applied using Test C or E .
Regarding SHBG, mine is 55 nmol/L. We know more,now, about underlying factors/measurments from a clinical perspective, but in 1937, that doctor was just administering testosterone and getting results. Maybe he didn't get similar results with other patients because there were other issues/factors in play, which couldn't be measured by tests that did not yet exist. Knowing more doesn't always equate with improved treatment nor response to said treatment, IMO, unless your doctor was Eugene Shippen, who was/is a true scientist who analyzed every factor until the patient had a positive response or substantial improvement. I only know of him by reputation. Every doctor runs labs but interpreting them in relation to the patient's symptoms is an art.