17-Hydroxyprogesterone (serum)

Referred to Berkshire & Surrey Pathology Services, Frimley Park Hospital NHS Foundation Trust, Portsmouth Road, Frimley, Surrey GU16 7UJ

Alternative names, keywords


Samples required

Clotted blood (gold cap, 5 mL tube).

Smaller tubes are available, but avoid gel tubes for paediatric samples.

For premenopausal women please take samples at the start of the follicular phase.

Test indications

Early test for congenital adrenal hyperplasia (CAH).

Reference range

Follicular phase & adult males

1 - 8.7 nmol/L

Luteal phase

< 18 nmol/L

Pre-pubertal children (from 6m)

< 15 nmol/L


< 20 nmol/L

Short synacthen peak response

< 25 nmol/L


Turnaround time

Referral lab quotes turnaround time of 10 days, however additional time must be allowed for packing, dispatch and delivery of sample, and return and processing of results.


Biochemistry (Referrals)