Do DHEA-S labs.
If >40, take 25mg as levels are dropping and test late to see results.
DHEA is made in adrenals, not testes, but testicular pregnenolone production drops with TRT and reduces amount of pregnenolone available for pregnenolone–>DHEA in the adrenals. hCG supports testicular cholesterol–>pregnenolone. There is no feedback loop or control for the things mentioned. Aging is not helpful. Thyroid function affects vitality of all organ systems.