Expired Study
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Clinical Trial 1438

Los Angeles, CA 90033


Study Summary:

The University of Southern California Swallowing Center is seeking healthy volunteers ages 18 to 69 for a research study on reflux disease. Study includes a brief questionnaire, esophageal manometry studies (studies of the pressure in your esophagus), and ambulatory pH monitoring (measuring the amount of acid in the upper and lower esophagus). A new device for measuring acid and pH changes in the upper esophagus will be used for this study. We hope that this study will lead to better diagnosis of reflux disease in patients with respiratory or upper esophageal symptoms.


Qualified Participants Must:

• Be between 18-69 years of age
• Have no symptoms of heartburn
• Have no difficulty swallowing
• Have no respiratory problems
• Not have history of alcohol or tobacco use.


Qualified Participants May Receive:

$250.00 for completion of the study


Clinical trials are medical research studies designed to test the safety and/or effectiveness of new investigational drugs, devices, or treatments in humans. These studies are conducted worldwide for a range of conditions and illnesses. Learn more about clinical research and participating in a study at About Clinical Trials.