Your doctor may be able to diagnose GERD from your description of symptoms, but may also suggest tests to evaluate your condition and determine the best treatment plan.
Three tests your doctor may consider for suspected or confirmed GERD are esophageal pH monitoring, endoscopy, and manometry. With pH monitoring, your doctor measures the amount of acid in your esophagus over a 24- to 96-hour period. Endoscopy uses a flexible tube with a light and video camera on the end to visualize the esophagus. And manometry assesses the function necessary for proper swallowing.