Re: I wonder
One of the ways to test this is the 24hr Ph monitoring test. It will test the amound of acid coming up into your esophagus. I had this test done twice. The first time came back "normal", but I knew I continued to have symptoms so I asked to have it done again, and the second test came back "abnormal" (more acid coming up than the average person). I would assume if you have too little stomach acid, your levels on this test would be low.