Laboratory Test Information Guide

Details for Intrinsic Factor Antibodies, Serum

Test Name: Intrinsic Factor Antibodies, Serum
Alternate Name(s): Anti Intrinsic Factor
Laboratory: Core (all campuses)
Specimen Type: 6 mL Red or 5 mL Gold top Vacutainer tube
Collection Information: Minimum volume of serum required is 3 mL.

No Vitamin B12 injections within the last 24 hours.
Test Schedule: As required
Turnaround time from when specimen
is received in testing laboratory:
30 days
Reference Range: Negative
Effective Date: 2000-09-11
Revised Date: 2018-01-19
Critical Value:  
Interpretive Comments: Results will be reported as NEGATIVE, EQUIVOCAL or POSITIVE. Equivocal results will include a recommendation for a repeat specimen.

A NEGATIVE result does not exclude pernicious anemia as only 60% of subjects with pernicious anemia have Intrinsic factor Antibodies. Thus the assay results are not diagnostic and must be interpreted in conjunction with clinical findings and other diagnostic tests.
Special Processing: Submit a separate aliquot if Parietal Cell Antibodies is also requested.
Comments: Referred out Tuesday - Thursday
Method of Analysis: ELISA
Critical Information Required:  
Storage & Shipment:  Store and send frozen.
System Codes: 
Referred To: In-Common Laboratories

Questions? Comments? Contact Laura Gopaul