Reflux
PEP Test
A non-invasive saliva test that detects pepsin — a marker of reflux episodes.
Clinical use
Provides objective, non-invasive evidence of gastro-oesophageal (and extra-oesophageal) reflux, supporting diagnosis where symptoms are ambiguous.
Highlights
- Two lines mean pepsin is present; one line means it is not. Read between 5 and 15 minutes
- Saliva or sputum collected into citric acid, which preserves any pepsin present until the sample is run