Test Details
Mnemonic
VD25H
Ordering Code
3600336
CPT-4 Code(s)
82306
Specimen Information
Collect
Serum separator tube (SST)
Specimen Preparation
Centrifuge, separate serum from cells and send 1.0 mL serum in a screw capped plastic vial.
Alternate Specimen
Serum: Red top
Minimum Volume
0.3 mL
Transport Temperature
Refrigerated
Rejection Criteria
EDTA plasma, tissue or urine. Grossly hemolyzed, lipemic.
Stability
Room temperature: 72 hours
Refrigerated: 7 days
Frozen: 6 months
Refrigerated: 7 days
Frozen: 6 months
Methodology
Quantitative Chemiluminescent Immunoassay
Reference Range
0 - 17 years
Deficiency: <20 ng/mL
Optimum Level: >=to 20 ng/mL*
*(Wagner CL et al. Pediatrics 2008; 122: 1142-52.)
18 years and older
Deficiency: <20 ng/mL
Insufficiency: 20 - 29 ng/mL
Optimum Level: 30 - 80 ng/mL
Possible Toxicity: >150 ng/mL
Deficiency: <20 ng/mL
Optimum Level: >=to 20 ng/mL*
*(Wagner CL et al. Pediatrics 2008; 122: 1142-52.)
18 years and older
Deficiency: <20 ng/mL
Insufficiency: 20 - 29 ng/mL
Optimum Level: 30 - 80 ng/mL
Possible Toxicity: >150 ng/mL
Performing Laboratory
ARUP Reference Laboratory
New York DOH Approval Status
Yes