I just tested for nighttime GERD last week at NJH. I had a EGD, manometry and 24-Hour pH Impedance tests done, not fun, but considered the gold standard for answers when MAC/BE are involved. Still waiting for final results but I don't think I have a major problem, at this point anyway. The doctor did prescribe Prilosec for 6 weeks because one of the tests that did come back showed mild esophagitis. Beyond that, I had the testing done and now, thankfully, that is over with but very necessary!