Clinical Validation of an Office-Based ¹⁴C-UBT (Heliprobe) for H. pylori Diagnosis in Iranian Dyspeptic Patients

Table 2

Diagnostic performance of Heliprobe ¹⁴C-UBT against gold standard.

Heliprope ^14C-UBT compared to:	Sensitivity (95% CI)	Specificity (95% CI)	PPV (95% CI)	NPV (95% CI)	Accuracy (95% CI)
Gold standard	94% (85–98%)	100% (92–100%)	100% (93–100%)	93% (82–98%)	97%

¹⁴C-UBT: urea breath test with labeled carbon-14; RUT: rapid urease test; PPV: positive predictive value; NPV: negative predictive value; CI: confidence interval. For gold standard definitions refer to the text.