The ph test the ph test for acid reflux (gastroesophageal reflux disease or gerd) measures how often and for how long stomach acid enters the esophagus, and how well it clears the esophagus performed with a thin, plastic tube armed with a sensor, it measures the amount of acid backing up into the esophagus. Acid reflux ph monitor test. Esophageal ph monitoring is the current gold standard for diagnosis of gastroesophageal reflux disease (gerd) it provides direct physiologic measurement of acid in the esophagus and is the most objective method to document reflux disease, assess the severity of the disease and monitor the response of the disease to medical or surgical treatment it can also be used in diagnosing.
acid reflux ph monitor test