Used by Experts to Detect Silent Reflux: the Reflux Symptom Index (RSI) Are you unsure whether you have silent reflux? Check your symptoms within a few minutes. 9 QUESTIONS ABOUT YOUR SYMPTOMS THAT ARE GOOD INDICATORS FOR THE DISEASE... CALCULATION OF YOUR REFLUX SYMPTOM INDEX (RSI) WHICH TELLS YOU THE STRENGTHS OF YOUR SILENT REFLUX... USED BY PHYSICANS, RESEARCHERS & SURGEONS WORLDWIDE TO MEASURE TREATMENT SUCCESS... PLUS… LEARN WHAT YOUR NEXT STEPS ARE - BASED ON YOUR TEST RESULTS... Get Tested Online!