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src="images/slide-01.jpg" alt="Schedule a sick visit online anytime! Banner image for Peninsula Gastroenterology Medical Group, Gastroenterologists"> </div>  </div>  <div class="clearfix"></div> </div>  </div>  <div id="content-wrapper"> <div id="breadcrumbtree-wrapper">  </div> <div id="content-container"> <section id="main-content" class="left-col"> <div id="content"> <h1>Ambulatory 48 Hour pH Test</h1> <h2>Patient Procedure Instructions</h2><h3>Purpose</h3><p>To record the amount of severity of reflux into the esophagus.</p><h3>Preparation for the Study</h3><h4>Ten Days Prior to the Study</h4><p>Unless otherwise directed by the doctor, stop taking the following medications:</p><ul> <li>Aciphex</li> <li>Nexium</li> <li>Prevacid</li> <li>Prilosec</li> <li>Protonix</li></ul><h4>The Day of the Study</h4><ol> <li>If your procedure is in the morning do not eat or dink anything after midnight the night prior to your procedure:</li> <li>If your procedure is in the afternoon, you may have clear liquids up to 8am (coffee, tea, soda, water, clear juices, clear broth, popsicles and jello).</li> <li>Be prepared to be at the center for one hour. Typically this procedure is done in conjuction with an Endoscopy, so you will need to have a ride home.</li> <li>The pH study will last for 48 hours.</li> <li>Do not take antacids the day of the study without your doctors approval (Tums, Rolaids, Mylanta, Maalox). If you do not take an antacid be sure to document it on your diary.</li></ol><h4>48 Hours Later</h4><p>You will need to return to the <a href="office-atherton.php">Atherton Endoscopy Center</a> 48 hours later to drop off your receiver.</p> <div class="clearfix"></div> </div>  <div class="clearfix"></div> </section>  <section id="right-col" class="screenonly"> <h2>Related Links</h2> <nav class="subnav"> <ul><li><a class="" href="http://www.gipractice.com/FLEXIBLE-SIGMOIDOSCOPY.php">Flexible Sigmoidoscopy</a></li><li><a class="" href="http://www.gipractice.com/ERCP.php">ERCP</a></li><li><a class="selectedon" href="http://www.gipractice.com/AMBULATORY-48-HOUR.php">Ambulatory 48 Hour pH Test</a></li><li><a class="" href="http://www.gipractice.com/pill-cam.php">Small Bowel Capsule Endoscopy</a></li><li><a class="" href="http://www.gipractice.com/upper-endo-ultra-fine-needle-asp.php">Upper Endoscopic Ultrasound with Fine Needle Aspiration</a></li><li><a class="" href="http://www.gipractice.com/low-endo-ultra-fine-need-asp.php">Lower Endoscopic Ultrasound with Fine Needle Aspiration</a></li><li><a class="" href="http://www.gipractice.com/halo-radio-abl.php">HALO<sup>360</sup> BARRX Radiofrequency Ablation of Barretts Esophagus</a></li></ul> </nav> </section> <div class="clearfix"></div> </div>  </div>  <div id="endoscopy-wrapper" class="screenonly"> <img src="images/atherton-endoscopy-center.jpg" alt="Atherton Endoscopy Center photo" class="img"> <div class="content-wrap"> <h1 class="center"><a href="office-atherton.php" title="Atherton Endoscopy Center">Atherton Endoscopy Center</a></h1> <div class="content"> <div class="float-right"> <a href="office-atherton.php" title=""><img src="images/atherton-endoscopy-reception.jpg" alt=""></a><br><a href="office-atherton.php" title="Atherton Endoscopy Center" class="button fullwidth"><i class="fa fa-map-marker"></i> Map & Directions</a> </div> <p>While you are a patient at Atherton Endoscopy Center, our highly competent and professional staff will care for you. 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Above all, our staff is friendly and concerned for your comfort.</p> <p><img src="images/accreditation.png" alt=""></p> </div> </div> </div>  <div id="office-location-wrapper" class="screenonly"> <ul> <li><img src="images/mountain-view-office-sobrato.jpg" alt="Mountain View Office photo"><span class="content"><span class="phone">650-964-3636</span><br><br><a href="office-mountain-view.php" title="Map and Directions to the Mountain View office of Peninsula Gastroenterology Medical Group, Gastroenterologists">2495 Hospital Drive<br>Suite 600<br>Mountain View, CA 94040</a></span></li> <li><img src="images/redwood-city-office.jpg" alt="Redwood City Office photo"><span class="content"><span class="phone">650-365-3700</span><br><br><a href="office-redwood.php" title="Map and Directions to the Redwood City office of Peninsula Gastroenterology Medical Group, Gastroenterologists">2900 Whipple Ave<br>Suite 245<br>Redwood City, CA 94062</a></span></li> </ul> </div> <div id="footer-wrapper"> <footer id="footer"> <h2>Peninsula Gastroenterology Medical Group</h2> <p> </p> <ul class="footer-menu"> <li><a href="index.php" title="Home page for Peninsula Gastroenterology Medical Group, Gastroenterologists">Home</a> |</li> <li><a href="gastroenterology-specialists.php" title="Meet the Gastroenterology Specialists of Peninsula Gastroenterology Medical Group, Gastroenterologists">Providers</a> |</li> <li><a href="endoscopic-procedures.php" title="Medical Services and Endoscopic Procedures performed by Peninsula Gastroenterology Medical Group, Gastroenterologists">GI Services</a> |</li> <li><a href="procedure-prep.php" title="Procedure Prep instructions provided by Peninsula Gastroenterology Medical Group, Gastroenterologists" >Preps</a> |</li> <li><a href="office-atherton.php" title="Atherton Endoscopy Center">Endoscopy Center</a> |</li> <li><a href="patient-center.php" title="Forms, Insurance, Procedure Prep">Your Visit</a> |</li> <li><a href="locations.php" title="Office locations, endoscopy center affliations and hospital affiliations of Peninsula Gastroenterology Medical Group, Gastroenterologists">Locations</a> |</li> <li><a href="contact-us.php" title="Contact the offices of Peninsula Gastroenterology Medical Group, Gastroenterologists">Contact Us</a></li> </ul> <ul class="footer-menu">  <li><a href="patient-portal.php" title="Secure Online Patient Portal for the patients of Peninsula Gastroenterology Medical Group, Gastroenterologists" ><i class="fa fa-lock"></i> Patient Portal</a> | </li> <li><a href="https://surveys.reputation.com/surveys3/run?tenantKey=bc966ab61bf&templateId=5d717e3340f64637fd4adfe8&locale=en_US" target="_blank" title="Satisfaction survey for the patients of Peninsula Gastroenterology Medical Group, Gastroenterologists"><i class="fa fa-check-square"></i> Patient Survey</a></li> </ul> <div class="clearfix"></div> </footer>  <div id="footer-bottom"> <ul class="footer-menu screenonly"> <li><a href="privacy.php" title="Privacy Policy for Peninsula Gastroenterology Medical Group, Gastroenterologists">Privacy</a> | </li> <li><a href="sitemap.php" title="Sitemap for the website of Peninsula Gastroenterology Medical Group, Gastroenterologists">Sitemap</a></li> </ul> <ul class="footer-menu2"> <li>© 2024, Peninsula Gastroenterology Medical Group, Gastroenterologists. | <a title="Medical website development, hosting, management, maintenance, and marketing" href="http://www.medicalpracticewebsitedesign.com" target="_blank">Medical Practice Website Design</a> by <a title="Healthcare consulting and medical management for physicians" href="http://www.medicalpracticewebsitedesign.com" target="_blank">Medical Management Associates</a>.</li> </ul> </div>  </div> </div> <script type="text/javascript" src="js/jquery-3.6.0.min.js" ></script><script src="js/jquery.cycle2.js"></script><script src="js/jquery.cycle2.carousel.min.js"></script><script type="text/javascript">jQuery(document).ready(function($) { var $slider = document.getElementById('nav-wrapper'); var $toggle = document.getElementById('mtoggle'); $toggle.addEventListener('click', function() { var isOpen = $slider.classList.contains('slideIn'); $slider.setAttribute('class', isOpen ? 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