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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.

Laboratory Code

LAB720

Specimen Requirements

Specimen Type: Serum 

Container/Tube: Gold Top (SSTII) / Red Top

Volume: 5.0 mL / 6.0 mL blood
Minimum volume: 0.5 mL serum

Additional information: Indicate patient’s age and sex

Collection Instructions: Allow specimen to clot for 30 mins and centrifuge within 2 hrs

Specimen Stability

Specimen Type Serum
Ambient 8 hours
Refrigerate 2 days
Frozen 6 months (preferred)

Methodology

Radioimmunoassay

Days and Times Performed

Tuesday, TAT 2 - 8 days

Specimen Condition

Gross Haemolysis Reject
Gross Icterus Reject
Gross Lipaemia Reject
Others Not applicable

Reference Interval

  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

Testing Laboratory

National University Hospital
Clinical Chemistry, 67724399

Useful For

Diagnosis of congenital adrenal hyperplasia due to 21-hydroxylase deficiency

Service Code

31883

LOINC Code Information

14569-8

Update

Last updated 24/02/2025