Peninsula Gastroenterology Medical Group, Gastroenterologists logo for print
Redwood City: 2900 Whipple Ave | Suite 245 |Redwood City, CA 94062 • Phone: 650-365-3700
Mountain View: 2500 Hospital Drive | Building 8, Suite B | Mountain View, CA 94040 • Phone: 650-964-3636

Peninsula Gastroenterology Medical Group, Gastroenterologists

650-365-3700Redwood City
650-964-3636Mountain View

Ambulatory 48 Hour pH Test

PATIENT PROCEDURE INSTRUCTIONS

AMBULATORY 48 HOUR pH TEST

Purpose:

To record the amount of severity of reflux into the esophagus.

Ten Days Prior to the Study:

Stop taking the following medications:

Aciphex, Nexium, Prevacid, Prilosec and Protonix, unless otherwise directed by the doctor.

The Day of the Study:

  1. If your procedure is in the morning do not eat or dink anything after midnight the night prior to your procedure:
  2. 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).
  3. 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.
  4. The pH study will last for 48 hours.
  5. 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.

48 Hours Later:

You will need to return to the Atherton Endoscopy Center 48 hours later to drop off your receiver.

FOR MORE INFORMATION