Yes, it is possible to test for acid reflux at home. There are several at-home tests that can be used to diagnose acid reflux, including the pH test, the impedance test, and the Bravo capsule test.
PH Test
The pH test involves measuring the acidity of the esophagus. A thin tube is inserted through the nose and down the esophagus. A monitor attached to the tube measures and records the pH levels in the esophagus. If the pH is lower than 4.0, it indicates the presence of acid reflux.
Impedance Test
The impedance test is similar to the pH test, but it measures the flow of both acid and non-acidic substances in the esophagus. A thin tube is inserted through the nose and down the esophagus. The tube contains electrodes that measure the flow of substances in the esophagus. If the flow of acidic substances is greater than the flow of non-acidic substances, it indicates the presence of acid reflux.
Bravo Capsule Test
The Bravo capsule test involves swallowing a capsule that contains a miniature pH monitor. The capsule is attached to a thin tube that is inserted through the nose and down the esophagus. The capsule transmits data to a receiver worn on the patient's belt. The data is then analyzed to assess the level of acid reflux in the esophagus.