pH-metry (Reflux Diagnosis)

pH-metry is a diagnostic test that confirms reflux disease by directly measuring how much acid reaches the food pipe (oesophagus) over an extended period. It is especially useful when standard endoscopy looks normal but a person still has reflux-type symptoms, because it captures acid exposure that a single snapshot examination would miss. In a common modern version, a tiny pH capsule is attached to the lower oesophagus during a brief endoscopy under sedation, then records acid levels for about 24 to 48 hours before detaching on its own and passing naturally. The result gives an objective picture of whether, and how often, acid is reaching the oesophagus.