pH Monitoring is available for the investigation of extra-oesophageal reflux symptoms such as cough, hoarseness and sore throat. It is a simple procedure performed in the rooms without requirement for an anaesthetic. A small probe is placed in the back of the mouth for 24 hours while the pH is recorded. This information allows us to correlate symptoms with acid levels. Some patients may be suitable for reflux surgery with the aim of curing reflux disease and ceasing acid medications. This procedure is available to both public and private patients.