ARUP's Laboratory Test Directory
| 0051384: Outer Membrane Protein (OMP) IgA |
| Test Mnemonic: OMP IGA | |
|
Methodology: Enzyme-Linked Immunosorbent Assay
Performed: Sun, Tue, Thu Reported: 1-4 days |
| Specimen Required: | |
|
Collect: One 4 mL SST.
Transport: 1 mL serum at 2-8°C. (Min: 0.25 mL) Submit specimen in an ARUP Standard Transport Tube. Pediatric Collection/Transport: 0.25 mL serum at 2-8°C. Stability: After separation from cells: Ambient: 2 days; Refrigerated: 2 weeks; Frozen: 1 year |
|
| Reference Interval: |
|
Negative: 20.0 Units or less Equivocal: 20.1-24.9 Units Positive: 25.0 Units or greater |
| Interpretive Data: | |
|
Up to 55% of patients with Crohn disease may be positive for IgA antibodies to Outer Membrane Protein (OMP). The absence of IgA antibodies to OMP does not rule out Crohn disease.
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| CPT Code(s): | |
| 83516 |