title: 17-Hydroxyprogesterone in normal children and congenital adrenal hyperplasia. Measurement in serum by radioimmunoassay after thin-layer chromatography.
abstract: Serum 17alpha-hydroxyprogesterone (17 OH-P) was measured by a specific radioimmunoassay technique combined with thin-layer chromatography. Normal values for children are less than 1.1 microgram/1 (less than 3.3 nmol/l)--corresponding to values found in the literature. In congenital adrenal hyperplasia (CAH) values up to several hundred microgram/l are found. The values rise after ACTH stimulation and are suppressed by decadrone or cortisone treatment. The rise in 17 ketosteroids and pregnanetriol in untreated CAH is relatively smaller (15--25 fold). This clinical sensitivity of 17 OH-P is thus valuable for the diagnosis of CAH (21 hydroxylase deficiency). Furthermore it is easier to take a blood sample than to collect urine for 24 hours. The usefulness in therapeutic monitoring is being studied.
mesh_terms: D015068:17-Ketosteroids / Q000652:urine; D000312:Adrenal Hyperplasia, Congenital; D000308:Adrenocortical Hyperfunction / Q000097:blood; D000324:Adrenocorticotropic Hormone; D000328:Adult; D002648:Child; D002675:Child, Preschool; D002855:Chromatography, Thin Layer; D005260:Female; D006801:Humans; D006908:Hydroxyprogesterones / Q000097:blood*; D007223:Infant; D008297:Male; D011279:Pregnanetriol / Q000652:urine; D011863:Radioimmunoassay; D012016:Reference Values
chemical_list: D015068:17-Ketosteroids; D006908:Hydroxyprogesterones; D011279:Pregnanetriol; D000324:Adrenocorticotropic Hormone