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HelpTest Code AIF Anti-Intrinsic Factor Antibody
Laboratory Code
LAB857
Specimen Requirements
Specimen Type: Serum
Container/Tube: Gold Top (SSTII) / Red Top
Volume: 5.0 mL / 6.0 mL blood
Minimum Volume: 0.5 mL serum
Collection Instructions: Allow specimen to clot for 30 mins and centrifuge within 2 hrs
Specimen Stability
| Specimen Type | Serum |
|---|---|
| Ambient | 8 hours |
| Refrigerate | 2 weeks (preferred) |
| Frozen | 1 month |
Methodology
Enzyme Immunoassay
Days and Times Performed
Monday, TAT 2 - 8 days
Specimen Condition
| Haemolysis | OK |
|---|---|
| Icterus | OK |
| Lipaemia | OK |
| Others | Not applicable |
Reference Interval
No antibody detected: < 20 U/mL
Positive: ≥ 20 U/mL
Testing Laboratory
National University Hospital
Clinical Chemistry, 67724346
Useful For
Autoantibodies against Intrinsic Factor are specific for pernicious anaemia (PA) but are not found in the serum of every patient with PA.
Service Code
31618
LOINC Code Information
56539-0
Alias
AIF
Anti Intrinsic Factor Ab
Update
Last updated 21/02/2025