Test Details
Mnemonic
B12
Ordering Code
1000760
CPT-4 Code(s)
82607
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
Plasma: Lavender EDTA
Serum: Red top
Serum: Red top
Minimum Volume
0.5 mL
Transport Temperature
Refrigerated
Rejection Criteria
Grossly hemolyzed or grossly lipemic specimens, heparin plasma
Stability
Room temperature: 7 days
Refrigerated: 7 days
Frozen: 28 days
Refrigerated: 7 days
Frozen: 28 days
Methodology
Immunoassay
Reference Range
See report
Performing Laboratory
Quest Valencia
New York DOH Approval Status
Yes