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Test Code PRL Prolactin

Laboratory Code

LAB531

Specimen Requirements

Specimen Type: Serum
Container/Tube: Gold Top (SSTII) 
Volume: 5.0 mL
Minimum Volume: 0.5 mL serum
Collection Instructions: Allow specimen to clot for 30 mins and centrifuge within 2 hrs.

Specimen Stability

Specimen Type Serum
Ambient 24 hours
Refrigerate 7 days
Frozen 12 months

Methodology

Chemiluminescent Immunoassay

Days and Times Performed

24 hrs, TAT 1 day

Specimen Condition

Gross Haemolysis Alert/Reject
Icterus OK
Lipaemia OK
Others Not applicable

Reference Interval

Age Male Female
4 – 29 days 264 – 4,468 mIU/L
30 days – < 1 yr 132 – 2,388 mIU/L
1 – 18 yrs 88 – 484 mIU/L
≥ 19 yrs 73 – 407 mIU/L 109 – 557 mIU/L

 

Female 
Tanner Stage I: 44 – 417 mIU/L 
Tanner Stage II: 83 – 484 mIU/L 
Tanner Stage III: 82 – 485 mIU/L 
Tanner Stage IV: 123 – 487 mIU/L 
Tanner Stage V: 114 – 486 mIU/L

 

Male 
Tanner Stage I: 66 – 417 mIU/L 
Tanner Stage II: 75 – 391 mIU/L 
Tanner Stage III: 82 – 485 mIU/L 
Tanner Stage IV: 126 – 419 mIU/L 
Tanner Stage V: 136 – 671 mIU/L

Testing Laboratory

National University Hospital

Clinical Chemistry, 67724346

Useful For

Diagnosis and management of pituitary adenoma.

Investigation of hypogonadism.

Service Code

31665

LOINC Code Information

83111-5

Update

Last updated 12/03/2025