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.

Test indications

Primarily offered to monitor the treatment of CAH.

Often a urinary steroid profile is a more useful test first.

Reference range

Pre-pubertal (0.5 - 9 years): < 0.8 nmol/L
Post-pubertal: 2 - 5.4 nmol/L

Reference range during puberty depends on pubertal stage.

Turnaround time

Referral lab quotes turnaround time of 12 days, however additional time must be allowed for packing, dispatch and delivery of sample, and return and processing of results.


Biochemistry (Referrals)