Dehydroepiandrosterone Sulfate (DHEA-S):
A) Concentrations Exhibit a Circadian Rhythm That $\alpha$

Dehydroepiandrosterone sulfate (DHEA-S) :

A) concentrations exhibit a circadian rhythm that reflects the secretion of adrenocorticotropic hormone (ACTH) .
B) is an important screening test used to evaluate women with hirsutism and virilization.
C) concentration is increased in 17 $\alpha$ -hydroxylase deficiency-caused amenorrhea.
D) analysis is performed using heparinized plasma.