Pt come with complai of having nausea upper abdominal pain acid reflux,4week early complete h.pylori eradication therapy most appropriate next step of management
1:re test for h.pylori using carbon 13 urea breath test
2:retest for stool antigen test
3:refer for uper gi endoscopy
4:2nd line treatment for h.pylori popi,amoxicillin Nd doxycycline
5 2nd line treatme for h.pylori popi,amox Nd metronidazole