Helicobacter Pylori (HPI) AB, IgM
1 mL serum collected in SST or red top.
Enzyme-linked immunosorbent assay (ELISA)
Room temp: 7 days, Refrigerated: 14 days, Frozen: 14 days
Diagnose early H pylori infection in patients with gastric and duodenal disease. 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. Antibodies to IgM, although rare, may indicate an early infection.