Previous Image impedance pH study used for diagnosis of GERD 74 Share this:TwitterXFacebookLinkedInPinterestWhatsAppRedditPocketMastodon Related Image Author Rebecca Petersen Uploaded on 09/08/2010 Category Fundamentals: Diagnostic Upper Tags gerd, impedance ph, reflux Downloads 3410 If you have used this image in a publication or presentation please email MEDIA@SAGES.org and let us know how it worked out.