system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Best test to diagnose gastroesophageal reflux disease and quantify acid output is:
assistant
The correct answer is  24 hr pH monitoring "The gold standard, for diagnosing and quantifying acid reflux is the 24-hr pH test." -Sabiston Also Know Using 24-hour pH test an overall score is obtained. It is known as DeMeester score.