Test Directory

Test Code
VB12
Test Name
Vitamin B12
CPT Codes
82607
Expected Turnaround Time
1 day
Clinical Utility

Can be used to assist in the diagnosis of hematologic and/or neurologic states.

Specimen and Container Info

Specimen Types: Serum or Plasma

Collection Containers:

  • Gold Top, Serum Separator
  • Light Green Top, Plasma Separator
  • Red Top, Separator

  

Minimum Acceptable Volume:  0.8 mL

Processing and Submission Instructions

Separator tubes: Contains clot activator and gel for separating serum from cells, but not anticoagulant. Separate serum from cells as soon as the clot has formed (30 minutes). If specimen is centrifuged before clotting is complete, a fibrin clot will form on top of the cell. This may cause the gel barrier to not be intact and could cause improper separation of serum and cells, possibly affecting test results.

Transport Instructions

Transport to the laboratory refrigerated.

Stability Requirements

Refrigerated

24 hours

Frozen

One month

Freeze/Thaw Cycles

One freeze/thaw cycle

Methodology
Chemiluminescent Immunoassay
Reference Intervals
Performing Location
Roble Road Core Laboratory
Testing Schedule
Routine, daily