Browse the corpus

Conversion multipliers to SI units 0.0316 (nmol/L) 0.0303 (nmol/L) 0.0289 (nmol/L) 0.0276 (micromol/L) 0.0271 (micromol/L) 0.0347 (nmol/L) 0.0349 (nmol/L) 0.0347 (nmol/L) DHEA: dehydroepiandrosterone; DHEA-S: dehydroepiandrosterone sulfate; 17PREG: 17-hydroxypregnenolone; 17PROG: 17-hydroxyprogesterone. * Ranges for radioimmunoassay after preparatory chromatography, except for cortisol and DHEAS. Values differ slightly among laboratories. • 17PROG begins rising in the preovulatory phase and peaks as high as 400 ng/dL in the luteal phase of the cycle. Δ Normal women who are heterozygous for 21-hydroxylase deficiency usually have 17PROG levels >140 ng/dl at baseline, and these women often have responses to ACTH greater than those shown. Modified with permission from: Rosenfield R. Clinical review: Identifying children at risk for polycystic ovary syndrome. J Endocrinol Metab 2007; 92:787. file://jcem.endojournals.org/. Copyright © 2007 The Endocrine Society.