Patients attending for a therapeutic endoscopic procedure e.g. variceal banding, stent insertion, balloon dilatation. 
Patients with a known diagnosis e.g. upper gastrointestinal cancer 
Patients previously treated with HP eradication therapy 
Patients who had taken PPI, H2 receptor antagonists and antibiotics within 4 weeks 
Patients with acute gastrointestinal bleeding 
Patients who'd had previous gastric surgery 
Patients with chronic liver disease 
Patients with abnormal coagulation or any other contra-indication to use of standard biopsy in routine diagnostic endoscopic procedures 
Patients who are unable or unwilling to give informed consent 
Patients under the age of 18 years       
    

NCT02385045_exc_T1
Procedure
therapeutic endoscopic procedure
NCT02385045_exc_T2
Procedure
variceal banding
NCT02385045_exc_T3
Procedure
stent insertion
NCT02385045_exc_T4
Procedure
balloon dilatation
NCT02385045_exc_T5
Scope
variceal banding, stent insertion, balloon dilatation
NCT02385045_exc_T6
Condition
upper gastrointestinal cancer
NCT02385045_exc_T7
Condition
known diagnosis
NCT02385045_exc_T8
Procedure
HP eradication therapy
NCT02385045_exc_T9
Drug
PPI
NCT02385045_exc_T10
Drug
H2 receptor antagonists
NCT02385045_exc_T11
Drug
antibiotics
NCT02385045_exc_T12
Temporal
within 4 weeks
NCT02385045_exc_T14
Scope
PPI, H2 receptor antagonists and antibiotics
NCT02385045_exc_T15
Condition
gastrointestinal bleeding
NCT02385045_exc_T16
Qualifier
acute
NCT02385045_exc_T17
Procedure
gastric surgery
NCT02385045_exc_T18
Temporal
previous
NCT02385045_exc_T19
Procedure
liver disease
NCT02385045_exc_T20
Qualifier
chronic
NCT02385045_exc_T21
Condition
abnormal coagulation
NCT02385045_exc_T22
Condition
contra-indication
NCT02385045_exc_T23
Procedure
standard biopsy
NCT02385045_exc_T24
Procedure
diagnostic endoscopic procedures
NCT02385045_exc_T26
Person
age
NCT02385045_exc_T27
Value
under 18 years