Medicine Bernstein test involves infusion of 0.1 NHCl into the esophagus. This test is used to diagnosis which of the following condition? A Achalasia cardia B Diffuse esophageal spasm C Gastro esophageal reflux disorder D Esophageal malignancy 💡 Explanation Bernstein test involves infusion of 0.1 NHCl into the esophagus. This test is used to diagnosis which of the following condition? ✓ Correct Answer: C. Gastro esophageal reflux disorder