curbstickle , 7 hours ago

If it doesn’t cover the expected area of concern? No

If you dont know the cause of the issue? No

If you know the issue, and just need to check the state of the esophagus or something? Sure.

Its done for specific reasons, just like an endoscopy is done for specific reasons. When it comes down to it though, it only does a small part of what an endoscopy can do, and with a generic “acid reflux”, its not going to give enough information to diagnose. Its a way to assess symptoms, not a way to diagnose a gastrointestinal problem.