Laboratory Testing in the Differential Diagnosis of Polycystic Ovary Syndrome (PCOS) and Nonclassic Congenital Adrenal Hyperplasia (CAH)

This algorithm describes laboratory testing in the differential diagnosis of polycystic ovary syndrome (PCOS) from Nonclassic Congenital Adrenal Hyperplasia (CAH).

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This algorithm describes laboratory testing in the differential diagnosis of polycystic ovary syndrome (PCOS) from Nonclassic Congenital Adrenal Hyperplasia (CAH).

View Algorithm

Test Code 17180

17-Hydroxyprogesterone

17-Hydroxyprogesterone is elevated in patients with Congenital Adrenal Hyperplasia (CAH). CAH is a group of autosomal recessive diseases characterized by a deficiency of cortisol and an excess of ACTH concentration. 17-Hydroxyprogesterone is also useful in monitoring cortisol replacement therapy and in evaluating infertility and adrenal and ovarian neoplasms.

Test Code 36170

Testosterone, Free (Dialysis) and Total, MS

Helpful in assessing testicular function in prepubescent hypogonadal males and in managing hirsutism, virilization in females.

Test Code 90426

Steroid Panel, PCOS/CAH Differentiation

This panel is important in the differential diagnosis of PCOS vs. non-classical CAH in women with oligomenorrhea/amenorrhea and signs of androgen excess.

Test Code 17682

17-Hydroxyprogesterone Response to ACTH Stimulation

17-hydroxyprogesterone is elevated in patients with congenital adrenal hyperplasia (CAH). CAH is a group of autosomal recessive diseases characterized by a deficiency of cortisol and an excess of ACTH concentration. 17-hydroxyprogesterone is also useful in monitoring cortisol replacement therapy and in evaluating infertility and adrenal and ovarian neoplasms.

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Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.

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