Intrinsic Factor Blocking Antibody
Test Summary
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.
Aliases
- N/A
Specimen Collection
Special Instructions
N/A
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 past week.
Patient Preparation
N/A
Storage
Plastic screw-cap vial
Transport Temperature
Room temperature
Specimen Stability
- Room temperature: 7 days
- Refrigerated: 7 days
- Frozen: 28 days
Limitations
N/A
Other Acceptable Specimens
N/A
Unacceptable Specimens
N/A
Order Code
INTFAB
EPIC (Premier) Code
LAB269
Includes
N/A
CPT Code
- 86340
Billing Code
- 670107
CPT Statement
Methodology
Immunoassay (IA)
FDA Status
FDA Approved
Physician Attestation of Informed Consent
N/A
Testing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly VA, 20153
14225 Newbrook Drive
Chantilly VA, 20153
Department
Reference Testing
Reference Range
Negative
Setup Schedule / Expected Turnaround Time
Tuesday - Saturday; Report available: 1 - 2 days
Specimen Collection
Special Instructions
N/A
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 past week.
Patient Preparation
N/A
Storage
Plastic screw-cap vial
Transport Temperature
Room temperature
Specimen Stability
- Room temperature: 7 days
- Refrigerated: 7 days
- Frozen: 28 days
Limitations
N/A
Other Acceptable Specimens
N/A
Unacceptable Specimens
N/A
Result Information
Methodology
Immunoassay (IA)
Testing Laboratory
N/A
Reference Range
Negative
Setup Schedule / Expected Turnaround Time
Tuesday - Saturday; Report available: 1 - 2 days