Test Details
Mnemonic
IFAB
Ordering Code
1012500
CPT-4 Code(s)
86340
Specimen Information
Patient Preparation
Very high serum levels of Vitamin B12 may give false positive results for intrinsic factor antibody. No sample should be collected from a patient who has received Vitamin B12 injection therapy within the past week.
Collect
Serum separator tube (SST)
Specimen Preparation
Centrifuge, separate serum from cells within 2 hours of collection, and send 1.0 mL serum in a screw capped plastic vial.
Alternate Specimen
Serum: Red top
Plasma: Green sodium heparin, green lithium heparin
Plasma: Green sodium heparin, green lithium heparin
Minimum Volume
0.5 mL
Transport Temperature
Frozen
Rejection Criteria
Moderate hemolysis, gross lipemia, EDTA plasma
Stability
Room temperature: 8 hours
Refrigerated: 48 hours
Frozen: 28 days
Refrigerated: 48 hours
Frozen: 28 days
Methodology
Chemiluminescence
Reference Range
Negative
Performing Laboratory
Warde Medical Laboratory
New York DOH Approval Status
Yes