If a child is suspected to have H.pylori infection (say with recurrent abdominal pain, RAD), what is the best practice in OPD? Confirmation with 13C UBT/RUT(in more than 5 years) or empirical therapy and then the above-mentioned tests?

The serology isn't much valued in children and also the gold standard i.e gastric biopsy for H.pylori wouldn't be much preferred by the patients due to its invasive nature. Kindly suggest.