Specimen Requirements


Helicobacter Pylori (HPI) AB, IgM

Specimen Requirement

1 mL serum collected in SST or red top.


Enzyme-linked immunosorbent assay (ELISA)


Room temp: 7 days, Refrigerated: 14 days, Frozen: 14 days

Reference Range

By Report*


1-3 days

Clinical Use

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.

Test Code