Eosinophilic Esophagitis Diagnosis: pH Probe (Impedance Study)

If endoscopy was performed off of any type of antacid medication and biopsies revealed high numbers of eosinophils, a negative impedance or pH probe study can rule out reflux disease as the cause of the findings within the esophagus. If the pH probe study showed no evidence of reflux, then eosinophilic esophagitis may be the likely diagnosis.

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