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

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.


Reference Range(s)

Alternative Name(s)
IF-Blocking Antibody

Note: Result turn around 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.

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