I would say DHEAS
Why Measure DHEA-S?
At ZRT we test for DHEA-S, the sulfated form of DHEA. Providers often call with questions regarding the difference between DHEA and DHEA-S. The difference in structure of the two molecules is the presence of a sulfate group – DHEA-S is the sulfated form of DHEA. Approximately 98% of circulating DHEA in the bloodstream is the sulfated form (DHEA-S). DHEA-S binds more strongly to albumin, its carrier protein, than DHEA, thus contributing to the slower metabolic clearance from circulation [7]. In addition to the longer biological half-life, DHEA-S does not exhibit a strong diurnal rhythm as seen with cortisol and DHEA, nor does it vary from day to day [8]. Additionally, the levels of DHEA-S run in parallel to those of DHEA, and correlate very closely with clinical symptoms of androgen deficiency and excess
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