Test Overview
Test Methodology

Competitive Binding Immunoenzymatic Assay

Test Usage

Positive in 50% of persons with pernicious anemia.

Reference Range *

Negative (reported as positive, negative, or indeterminate).

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details
Days Set Up
Monday - Friday
Analytic Time

2 - 5 days

Soft Order Code
IFBA
MiChart Code
Intrinsic Factor Blocking Antibody
Synonyms
    Laboratory
    Sendout
    Reference Laboratory
    Mayo IFBA (9335)
    Section
    Special Testing
    Specimen Requirements
    Collection Instructions

    Collect specimen in a red top or SST tube. Centrifuge, aliquot serum into a plastic vial and refrigerate (preferred) or freeze.

    Contraindications
    This test should not be ordered on patients who have received a radioisotope (either diagnostically or therapeutically) or a vitamin B(12) injection within the previous week.
    Normal Volume
    1 mL serum
    Minimum Volume
    0.5 mL serum
    Additional Information

    Test sent to Mayo Medical Laboratories.

    Billing
    CPT Code
    86340
    Fee Code
    20430
    LOINC
    31444-3
    NY State Approved
    No