Presumptive screen for Helicobacter pylori
Patient should not have taken antibiotics or bismuth salts for at least 3 weeks prior to endoscopy or proton pump inhibitors 2 weeks prior to endoscopy, as these agents will suppress the growth of H. pylori, and may result in false negatives.
Ambient - 24 hours
Hospitals - deliver to the laboratory immediately
Agar medium
Negative