Test Code 17P 17-Hydroxyprogesterone

Important Note

This test should not be performed on patients who received radioactive material in the last 7 days.

Patients should be ≥ 1 year of age due to potential assay interference in neonates.

Submit only one of the following:

Additional information: Indicate patient’s age and sex

Allow specimen to clot for 30 mins and centrifuge within 2 hours

Specimen type: Serum

Volume: 0.5mL

Radioimmunoassay

Tuesday, TAT 2 - 8 days

	Male (nmol/L)	Female (nmol/L)
Male	2.0 – 10.1	–
Female - Follicular phase - Luteal phase	– –	1.2 – 6.9 0.7 – 11.7
Tanner scale	Male (nmol/L)	Female (nmol/L)
Tanner I: 1 – < 5 yrs 5 – < 8 yrs 8 – < 18 yrs	0.8 – 1.9 1.0 – 3.5 1.7 – 5.0	0.8 – 1.9 1.0 – 3.5 1.7 – 5.0
Tanner II – III	1.9 – 5.2	1.9 – 5.2
Tanner IV – V	3.6 – 10.3	2.0 – 6.0

National University Hospital
Clinical Chemistry, 67724399

Diagnosis of congenital adrenal hyperplasia due to 21-hydroxylase deficiency

Last updated 16/07/2026

14569-8