Just curious. I've thought about this a long time.
How is it a pH test is the "gold standard" for GERD?
GERD, the disease, presents the same way alot of diseases do - with reflux. Reflux is not the disease, it is a symptom and can be a symptom (apparently) of several things. (This goes back to my pet peeve about calling this condition "
acid-reflux disease" when it's really the sphincter causing the reflux, as opposed to e.g., gastritis, gastroparesis, etc.)
So if many things can cause bad reflux, why if you get a "fail" on the pH are you automatically branded as "GERD"? Couldn't it still be something else, and not the sphincters?
It seems to me of the tests I've heard of, the
manometry should be the standard.

After all, GERD means the sphincters failed, and if you show low pressure there, surely that's closer to a "bingo" as far as actually having "sphincter disease" (GERD). If you are showing normal - something else is causing this symptom?