| Esophageal pH monitoring | |
|---|---|
 pH-probe for measuring acidity in gastrointestinal tract | |
| MeSH | D050782 |
| OPS-301 code | 1-316 |
| MedlinePlus | 003401 |
In gastroenterology, 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 laryngopharyngeal reflux.