Could a simple blood or urine test replace painful biopsies for kids with EoE?

This study aims to find non-invasive markers in blood and urine that can show whether inflammation is present in the esophagus of children with eosinophilic esophagitis (EoE). Researchers will compare these markers with tissue samples from biopsies to see if they can reliably detect active disease. The goal is to reduce the need for repeated endoscopies and biopsies in the future. The study involves 88 children aged 1 to 18 who are already scheduled for an upper endoscopy.