Pathology

Test & Collection Guide

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Intrinsic Factor Antibody

Laboratory:

Referred Test

Test Code:

IFAB

Specimen types:

Serum

Container types:

Serum tube with gel

Collection Instructions:

Transport specimen at Room Temperature to lab
Sample haemolysis may make this test unreportable

Minimum Adult Volume:

2 mL

Paediatric Minimum Volume:

1 mL

Notes:

For diagnosis of autoimmune Vitamin B₁₂ malabsorption (pernicious anaemia)

Result may be artefactually positive if patient tested within a week of Vitamin B₁₂ replacement therapy

A negative result does not exclude the diagnosis

Obtain before treatment with Vitamin B₁₂ is commenced

Frequency:

Weekly

Result Turnaround Time:

7-10 days

Reference Interval:

Negative <=20 Units

Indeterminate 21-24 Units

Positive >=25 Units

Laboratory Use Only

External Laboratory:

St Vincents Hospital

External Laboratory details...