Urea Breath Test (UBT) With Breath Hp System /BreathID Hp Lab System Pediatrics

Inclusion Criteria: * Be older than 3 and younger than 18 years of age * Present with a clinical indication compatible with H. pylori based on the judgement of the treating physician (such as abdominal pain, nausea, diarrhea, reflux, peptic ulcer, dyspepsia, etc., or following treatment for H.pylori) * Subject/Legal guardian (and subject whenever relevant) is willing to sign the Informed Consent/Assent Form * Naïve to H. pylori treatment in the past 6 weeks Exclusion Criteria: * Participation in other interventional trials * PPI or H2 blockers within two (2) weeks prior to breath test/stool antigen test * Pregnant or breastfeeding female * Allergy to test substrates * Antibiotics (not related to H. pylori eradication) and/or Bismuth preparations within four (4) weeks prior to breath test * Exposure to any type of anesthesia, analgesics or sedation 24 hours prior to the breath test. * Exposure to any 13C-enriched substance 24 hours prior to the breath test. * Children 12 years and older - to be excluded after a written notification from the sponsor is received at the site that the limit of 1/3 of the sample size was achieved for this group * Subjects outside US - to be excluded after a written notification from the sponsor is received at the site that the limit of 1/3 of the sample size was achieved for this group