While this test may detect some complications of gerd, including esophagitis and barrett's esophagus, only about half the people with acid reflux disease have visible changes to the lining of. Test for acid reflux. Test results can often be normal when reflux is present, but an endoscopy may detect inflammation of the esophagus (esophagitis) or other complications an endoscopy can also be used to collect a sample of tissue (biopsy) to be tested for complications such as barrett's esophagus ambulatory acid (ph) probe test.
test for acid reflux
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