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Intrinsic Factor Blocking Antibody
Test Code568
Alias/See Also
LAB857
CPT Codes
86340
Preferred Specimen
1 mL serum
Minimum Volume
0.3 mL
Instructions
Samples should not be collected from a patient who has received Vitamin B12 injection therapy within the last week
Transport Container
Transport tube
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 7 days
Refrigerated: 7 days
Frozen: 28 days
Refrigerated: 7 days
Frozen: 28 days
Methodology
Immunoassay (IA)
Setup Schedule
Tues-sat
Report Available
2-4 days
Reference Range
Negative
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 Laboratory
| Quest Diagnostics Nichols Institute-San Juan Capistrano, CA |
| 33608 Ortega Highway |
| San Juan Capistrano, CA 92675-2042 |