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- Anti-Campylobacter Antibodies
- Anti-H pylori, IgA
Diagnose H pylori infection in patients with duodenal disease and for monitoring the eradication of H pylori following antimicrobial therapy; identify the small percentage of H pylori-infected patients who fail to mount a systemic IgG response and demonstrate IgA antibodies only and for those patients who have chronic mucosal infections
Enzyme-linked immunosorbent assay (ELISA)
• Negative: <9.0 units
• Equivocal: 9.0−11.0 units
• Positive: >11.0 units
Circulating antibodies to H pylori are predominantly of the IgG class. A systemic response of the IgA type is usually less pronounced but, if significant, may indicate a more severe inflammation. A few patients develop only antibodies to IgA. IgM antibodies are rarely found and appear to be of minor importance.
Causes for Rejection
|Order Code||Order Code Name||Order Loinc||Result Code||Result Code Name||UofM||Result LOINC|
|163170||Helicobacter pylori, IgA||6420-4||163173||H. pylori, IgA Abs||units||7901-2|