The 24-hour esophageal ph test is an outpatient procedure performed to measure the ph or amount of acid that flows into the esophagus from the stomach during a 24-hour period the ph test is. Acid reflux ph test results. During that 24 hours it measures the acid levels of the esophagus and up into the throat and larynx area this test may seem very similar to a typical ph monitoring test but the important thing to mention that this test uses a different sensor which is much better at detecting gaseous acid reflux which is the primary cause of lpr now let me.
acid reflux ph test results