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17-OH progesterone - Results

Alternative Names

17-hydroxyprogesterone; Progesterone - 17-OH

Normal Values:

Normal and abnormal values differ for babies born with low birth weight. In general, normal results are as follows:

Cord blood - 1,000 - 3,000 ng/dL
>24 hours - less than 100 ng/dL
Adults - less than 200 ng/dL

Note: ng/dL = nanograms per deciliter.

Note: Normal value ranges may vary slightly among different laboratories. Talk to your doctor about the meaning of your specific test results.

The examples above show the common measurements for results for these tests. Some laboratories use different measurements or may test different specimens.

What abnormal results mean:

High levels of 17-OH progesterone may be due to:

In infants with CAH, 17-OHP levels range from 2,000 - 40,000 ng/dL. In adults, a level greater than 200ng/dL may be due to nonclassical adrenal hyperplasia.

Reviewed last on: 5/31/2011
Linda Vorvick, MD, Medical Director, MEDEX Northwest Division of Physician Assistant Studies, University of Washington School of Medicine; and Susan Storck, MD, FACOG, Chief, Eastside Department of Obstetrics and Gynecology, Group Health Cooperative of Puget Sound, Bellevue, Washington; Clinical Teaching Faculty, Department of Obstetrics and Gynecology, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

References

Fritz MA, Speroff L. Normal and abnormal sexual development. In: Speroff L, Fritz MA, eds. Clinical Gynecologic Endocrinology and Infertility. 8th ed. Philadelphia, Pa: Lippincott Williams & Wilkins; 2011:chap 9.

Lambert SM, Vilain EJ, Kolon TF. A practical approach to ambiguous genitalia in the newborn period. Urol Clin North Am. 2010; 37(2):195-205.

Congenital adrenal hyperplasia

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