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HelpTest Code PCAB Parietal Cell Antibodies, IgG, Serum
Additional Codes
EPIC Order Code: LAB514
Reporting Name
Parietal Cell Ab, IgG, SUseful For
Evaluating patients suspected of having pernicious anemia or autoimmune-mediated deficiency of vitamin B12 with or without megaloblastic anemia
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
SerumSpecimen Required
Supplies: Sarstedt Aliquot Tube, 5 mL (T914)
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 0.5 mL Serum
Collection Instructions: Centrifuge and aliquot serum into a plastic vial.
Specimen Minimum Volume
Serum: 0.4 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Refrigerated (preferred) | 21 days |
| Frozen | 21 days |
Reference Values
Negative: ≤20.0 Units
Equivocal: 20.1-24.9 Units
Positive: ≥25.0 Units
Reference values apply to all ages.
Day(s) Performed
Tuesday, Friday
CPT Code Information
83516
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| PCAB | Parietal Cell Ab, IgG, S | 40960-7 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| PCAB | Parietal Cell Ab, IgG, S | 40960-7 |
Interpretation
A positive result indicates the presence of IgG antibodies to H(+)/K(+) ATPase and maybe suggestive of pernicious anemia (PA) or a related autoimmune disease.
A negative result indicates no detectable IgG antibodies to H(+)/K(+) ATPase; it does not rule out PA.
An equivocal result is inconclusive for the presence of IgG antibodies to H(+)/K(+)ATPase. Consider re-testing in 4-6 weeks if clinical suspicion for PA is high.
Report Available
2 to 4 daysReject Due To
| Gross hemolysis | Reject |
| Gross lipemia | Reject |
| Gross icterus | OK |
| Heat-treated specimen | Reject |
Method Name
Enzyme-Linked Immunosorbent Assay (ELISA)