18 OH-CORTICOSTERONE

Test Documentation
Specimen Required
Draw blood in a red top tube. Centrifuge, separate and send 3.0 mL serum (1.0 mL minimum) serum frozen in a screw-capped plastic vial.

Alternate Specimen
SST, Plasma: EDTA or Heparin

Methodology
High-pressure Liquid Chromatography/Tandem Mass Spectrometry (HPLC/MS-MS)

Stability
Room temperature: 1 day; Refrigerated: 1 day; Frozen: 90 days

Reference Range
Age   Range (ng/dL)  
Premature (26-28w) Day 4   10-670  
Premature (31-35w) Day 4   57-410  
Full-term Day 3   31-546  
31d-11m   5-220  
12m-23m   18-155  
24m-9y   6-85  
10-14y   10-72  
Adults   9-58  
8:00 AM supine   4-21  
8:00 AM upright   5-46  

Performed
Monday

Turnaround Time5-11 days
Test Code18OHC
CPT-4 Code (s)
82542

Warde
Medical
Laboratory