Test Details
Mnemonic
18OHC
Ordering Code
3500245
CPT-4 Code(s)
82542
Specimen Information
Collect
Red top
Specimen Preparation
Centrifuge, separate serum from cells and send 3.0 mL serum in a screw capped plastic vial.
Alternate Specimen
Serum separator tube (SST), Plasma: EDTA or Heparin
Minimum Volume
1.0 mL
Transport Temperature
Frozen
Stability
Room temperature: 1 day
Refrigerated: 1 day
Frozen: 90 days
Refrigerated: 1 day
Frozen: 90 days
Methodology
High-pressure Liquid Chromatography/Tandem Mass Spectrometry (HPLC/MS-MS)
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
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
Performing Laboratory
LabCorp
New York DOH Approval Status
No