Intrinsic Factor Blocking Antibody, Serum
Fasting Required: No

Specimen: Blood

Special Instructions: Discontinue B12 shots and/or supplements for 1 week prior to testing.

Results: 7-10 Business Days

Description: Intrinsic factor blocking antibody, which prevents the binding of vitamin B12 to the intrinsic factor molecule, is present in >50% of all patients with pernicious anemia and only rarely encountered in other conditions.
Pernicious anemia is one of the major causes of vitamin B12 deficiency.

Methodology: Immunoassay

Alternative Name(s): IF Antibody, IF Antibody Type 1 or Type 2, Intrinsic Factor Binding Antibody, Intrinsic Factor Blocking Antibody, Anti-Intrinsic Factor

Note: Result turnaround times are an estimate and are not guaranteed. Our reference lab may need additional time due to weather, holidays, confirmation/repeat testing, or equipment maintenance.