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HelpTest Code VB12 Vitamin B12 Assay, Serum
Specimen Required
Patient Preparation: Patient should be fasting.
Supplies: Sarstedt Aliquot Tube 5 mL (T914)
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 0.6 mL
Collection Instructions:
1. Serum gel tubes should be centrifuged within 2 hours of collection.
2. Red-top tubes should be centrifuged, and the serum aliquoted into a plastic vial within 2 hours of collection.
Useful For
Investigation of macrocytic anemia
Workup of deficiencies seen in megaloblastic anemias
Special Instructions
Method Name
Electrochemiluminescence
Reporting Name
Vitamin B12 Assay, SSpecimen Type
SerumSpecimen Minimum Volume
0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum | Refrigerated (preferred) | 48 hours | |
| Frozen | 60 days |
Reject Due To
| Gross hemolysis | Reject |
| Gross lipemia | OK |
Reference Values
232-1245 ng/L
Performing Laboratory
MCHS- MankatoTest Classification
This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.CPT Code Information
82607
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| VB12 | Vitamin B12 Assay, S | 2132-9 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| VB12 | Vitamin B12 Assay, S | 2132-9 |
Testing Algorithm
Day(s) Performed
Monday through Sunday