Evaluation of IgA and IgG Serology for the Detection of Helicobacter pylori Infection

Abstract

BACKGROUND: Serology is a safe, simple and noninvasive means of determining the presence of Helicobacter pylori. Reported sensitivity and specificity, however, have varied tremendously, and it is not clear whether positive serology reflects previous infection (treated within the past one to two years) or ongoing infection.