What is an impedance and pH study?
How do you get ready for the test?
What is done during the test?
How long will the test take?
How do you get to your test?
What is an impedance and pH study?
This test measures how much acid reflux and non-acid reflux you have. Everyone has some reflux from their stomach into their esophagus. This test will determine whether the amount of reflux you have is abnormal.
How to get ready for the test?
- Do not eat food or drink liquids for at least four hours before the test
- Your healthcare team will tell you whether you should stop or continue reflux or antacid medicines before the test.
- Continue taking all other medications as you normally would.
What is done during the test?
The impedance probe is a long, thin tube that is inserted through your nose and into your esophagus. Before the probe is inserted, lubricating gel is applied inside your nose to help reduce discomfort. You may feel mild discomfort during placement, which is normal.
Once the probe is placed in its final position, it is gently secured with tape to your nose, face, and neck. You will be aware of the probe in your throat during the study, and a mild sore throat is common.
The probe is connected to a small recording device that you will take home. You will also receive a journal. The healthcare team will explain how to use both the recorder and the journal.
How long will the test take?
The probe remains in place for 24 hours. You will be given the time and location for probe removal the following day.
Where do I go for the test?
If you are being seen at National Jewish Health, please check in at the front desk of the MIDC clinic on the day of your scheduled test. If you have questions before or during your test, call 303-270-2424.
Appointment changes
If you need to make changes to your appointment, please call 303-398-1355, option #4.
After the test
You may resume eating, drinking, and taking your usual medications unless instructed otherwise.
A mild sore throat or nasal irritation is common after testing and should resolve within a short time. Over-the-counter lozenges or saltwater gargles may help relieve discomfort.
If you experience any unusual symptoms or side effects after your test, contact your doctor.
When will I get my results?
Your test results must be reviewed, analyzed, and interpreted by a provider. This process typically takes four to six weeks.
After the results are finalized, a member of your care team will contact you to review the findings. You may also call National Jewish Health at 303-398-1355 to check on the status of your results.
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