Non-invasive Testing
Urea Breath Testing
Serology - ELISA
Stool Antigen Assay
Invasive Testing - Endoscopy
Urea Breath Testing
Serology - ELISA
Stool Antigen Assay
Helicobacter pylori
Gastroesophageal reflux disease 
Giardia lamblia
Peptic ulcer disease with or without perforation
Campylobacter jejuni
Gastritis
Yersinia enterocolitica
Pancreatitis