Geisinger Medical Laboratories/Geisinger Proven Diagnostics Test Catalog

Order Display Name: Geisinger Epic Procedure Code Or ID CPT Code:  

INTRINSIC FACTOR BLOCKING ANTIBODY

ORDERING INFORMATION:
Geisinger Epic Procedure Code: LAB2544         Geisinger Epic ID: 15285

SPECIMEN COLLECTION
Specimen type:
Serum.
Preferred collection container:
Specimen required:
1 mL aliquot serum; minimum 0.3 mL.
Patient preparation:
Samples should not be collected from a patient who has received Vitamin B12 injection therapy within the last week.

SPECIMEN PROCESSING
Specimen processing instructions:
Centrifuge and transfer serum specimens to clean, plastic, screw-capped vial(s). 
Transport temperature:
Room temperature (preferred). Refrigerated or frozen specimen also acceptable.
Specimen stability:
Room temperature: 7 days. Refrigerated: 7 days. Frozen: 28 days.
Rejection criteria:
Stability limits exceeded.

TEST DETAILS
Reference interval:
Negative.
CPT code(s):
86340
Note: The billing party has sole responsibility for CPT coding.  Any questions regarding coding should be directed to the payer being billed.  The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.
Test includes:
Detection of intrinsic factor blocking antibody.
Methodology:
Immunoassay
Synonyms:
Intrinsic factor antibody, INTFAC
Quest test code 568
Clinical significance:
Intrinsic Factor, produced by cells lining the stomach, binds vitamin B12 (cyanocobalamin) to facilitate absorption of the vitamin. Blocking antibody impedes the action of Intrinsic Factor, as observed in approximately half of the patients who develop pernicious anemia.

Performing Locations

Quest Diagnostics

Technical Lead: Michael Weaver    
Frequency: Monday-Friday morning    
Performed stat? No
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