Comparison of 4 diagnostic methods for Helicobacter pylori infection: A multicenter study using centralised facilities

Failure of a 1‐day high‐dose quadruple therapy for cure of Helicobacter pylori infection

“…H. pylori status was determined non‐invasively 6–8 weeks after treatment by 13 C‐urea breath test, performed according to the European protocol (positive = excess δ 13 C > 5/mL) (specificity and sensibility 95–100%) 28 , . 29 A positive test indicates treatment failure.…”