Health Dictionary
Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.
17 alpha-hydroxylase deficiency laboratory findings
Introduction
Overview
Overview
Laboratory findings consistent with the diagnosis of 17 alpha-hydroxylase deficiency include increased deoxycorticosterone and corticosterone with low cortisol.
Laboratory Findings
Laboratory Findings
Diagnosis is based on laboratory findings as following:[1]
- Elevated levels of deoxycorticosterone and corticosterone (>4,000 ng/dL, >116 nmol/L) with low cortisol (<5 mcg/dL, <138 nmol/L) is diagnostic.
- Elevated adrenocorticotropic hormone
- Elevated follicle-stimulating hormone
- Elevated luteinizing hormone
- Decreased serum levels of 17-hydroxypregnenolone
- Decreased 17-hydroxyprogesterone
- Decreased dehydroepiandrosterone
- Decreased androstenedione
- Decreased testosterone
- Decreased 17-hydroxylase corticosteroid
- Decreased urinary 17-ketosteroid
- Decreased estrogen
- Decreased aldosterone
- Decreased renin
Genetic testing
Genetic testing
- Genetic testing can detect approximately 95 percent of mutations.
- Genetic testing should only be done if the laboratory tests are non diagnostic or for purposes of genetic counseling.
References
References
- ↑ Martin RM, Lin CJ, Costa EM, de Oliveira ML, Carrilho A, Villar H, Longui CA, Mendonca BB (2003). “P450c17 deficiency in Brazilian patients: biochemical diagnosis through progesterone levels confirmed by CYP17 genotyping”. J. Clin. Endocrinol. Metab. 88 (12): 5739–46. doi:10.1210/jc.2003-030988. PMID 14671162.
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Mehrian Jafarizade, M.D [2]