ARUP's Laboratory Test Directory

Outer Membrane Protein (OMP) IgA : 0051384

Mnemonic: OMP IGA

Methodology: Enzyme-Linked Immunosorbent Assay
Performed: Sun, Tue, Thu
Reported: 1-4 days
Specimen Required: Collect:  One 4 mL serum separator tube.

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.
CPT Code(s): 83516
 
 

 

 

 
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