17-Hydroxy Progesterone, Random Urine

ISI Order Code: 17OHP R

CPT Code: 83498

Clinical Significance:
17-Hydroxy Progesterone is a steroid derived primarily from enzymatic metabolism of Progesterone and 17-Hydroxy Pregnenolone.  It is converted enzymatically to Androstenedione and 11-Deoxycortisol.  It is produced in both the gonads and adrenal glands.  It is excreted into the urine in conjugated and unconjugated forms of 17-Hydroxy Progesterone and as Pregnanetriol. This assay measures the total of the conjugated and unconjugated forms.  It is stimulated by ACTH and suppressed by Dexamethasone.  Levels of urine 17-Hydroxy Progesterone are greatly increased in patients with Polycystic Ovarian Disease and Congenital Adrenal Hyperplasia and show exaggerated responses to ACTH in these cases. 17-Hydroxy Progesterone is the marker steroid for determining cases of 21a-Hydroxylase Deficient Congenital Adrenal Hyperplasia.  Urine levels are frequently elevated in patients with idiopathic hirsutism

Reference Ranges:
0.1 – 4.2 ng/mg Creatinine

Procedure:
Urine 17-Hydroxy Progesterone is measured by an immunoassay.

Expected Turnaround Time: 7 Business Days

Turnaround time is defined as the usual number of days from the date of receipt of a specimen for testing to when the result is released to the ordering provider. Testing schedules may vary.

Reports: Sample Report

Patient Preparation:
Patient should not be on any Corticosteroid, ACTH, Estrogen, or Gonadotropin medications, if possible, for at least 48 hours prior to collection of specimen.

Specimen Collection:
10 ml of a random urine collection should be submitted for analysis. No special preservatives are required. Store specimen refrigerated during collection. Specimens should be frozen prior to shipping. Minimum specimen size is 5 ml.

Shipping Instructions:
Ship specimens frozen in dry ice.

References:

1. E Carmina and RA Lobo.  Pituitary-Adrenal Responses to Corticotropin-Releasing
   Factor in Late Onset 21-Hydroxylase Deficiency.  Fertility and Sterility 54: 79-83, 1990.
2. ET Wong, DR Brown, RA Ulstrom, and MW Steffes.  Urinary 17-alpha-
   Hydroxyprogesterone in Diagnosis and Management of Congenital Adrenal
   Hyperplasia.  Journal of Clinical Endocrinology and Metabolism 49: 377, 1979.