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VITAMIN B12 & FOLATE
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Test Code
LAB2466 (IN HOUSE)LAB69 (IN HOUSE)
Alias/See Also
Folate
CPT Codes
82746
Includes
VITAMIN B12, FOLATE
Preferred Specimen
Gold top tube
Minimum Volume
2mL Serum
Other Acceptable Specimens
Heparin Plasma
Instructions
If Vitamin B12 level is less than 239 pg/mL, follow-up testing for
Intrinsic Factor Blocking Antibody @MYO (B12IF) is recommended. No hemolysis.
Intrinsic Factor Blocking Antibody @MYO (B12IF) is recommended. No hemolysis.
Specimen Stability
Refrigerated: 7 days
Frozen up to 4 weeks
Frozen up to 4 weeks
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Turbid Samples
Hemolyzed Samples
Hemolyzed Samples
Setup Schedule
Everyday
Report Available
Same day
Reference Range
Vitamin B12: 239-931 pg/mL
Folate: greater than 2.76-20 ng/mL
Folate: greater than 2.76-20 ng/mL
Performing Laboratory
Hoag Newport / Hoag Irvine
