Comparison Study Between C13-CAC Breath Test and 24-hour Gastric pH Monitoring

Unblinded Comparison Study for Relationship and Reproducibility Between C13-CAC Breath Test and 24-hour Gastric pH Monitoring, in Patients With Acid-related Diseases and Healthy Volunteers

The purpose of this study is to compare C13-CAC Breath Test with 24-hour Gastric pH Monitoring in Patients with Gastric Acid-related Diseases and Healthy Volunteers

Inclusion Criteria:

• Patients with Gastric Acid-related diseases like peptic ulcer or gastroesophageal reflux disease in investigator's judgment
• Healthy subjects who are determined no history of Helicobacter pylori infections

Exclusion Criteria:

• Patients with hypercalcemia
• Patients with hypothyroidism
• Patients with hyperparathyroidism
• History of upper gastrointestinal surgery or resection
• Any condition would limit the subject's ability to complete 24-hour gastric pH monitoring