Posted 2/7/2010 9:59 PM (GMT 0)
Hi Joe,
the 24 hour probe works the same as the impedance test, a small tube goes through the nose.
the only difference is that the impedance test measures also non acid reflux,bile and air,also you need to push a button if you feel pain to see if it is related to the reflux.
not every hospital has the impedance test availabel,i did the impedance at the university hospital.