Competitive Binding Immunoenzymatic Assay
Positive in 50% of persons with pernicious anemia.
Negative (reported as positive, negative, or indeterminate).
2 - 5 days
- INTRINSIC FACTOR BLOCKING AB
- IFB AB
- IFBA TEXT
- IFBA COMMENTS
Collect specimen in a red top or SST tube. Centrifuge, aliquot serum into a plastic vial and refrigerate (preferred) or freeze.
Test sent to Mayo Medical Laboratories.