A salivary gland scan uses a special substance to take pictures of saliva moving through your salivary glands. These images can diagnose a salivary gland blockage or a condition like Sjögren’s syndrome. This test is noninvasive and you can usually resume normal activities afterward.
A salivary gland scan is a nuclear medicine test that takes pictures of your salivary glands (the glands in your mouth that make spit) to see if they work properly. Other terms for this test include “salivary gland function scan” and “parotid scintigraphy” because it also provides information about your parotid glands.
Your healthcare provider may recommend a salivary gland scan if you have:
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A salivary gland scan uses a camera and a radioactive substance called a tracer. The tracer highlights saliva as it moves through your salivary glands.
Before your salivary gland scan, you’ll need to remove all jewelry from your face, head and neck. You’ll also need to let your provider know if you have any food allergies or if you’re pregnant or could be pregnant.
During the test, you lie down on a table in a nuclear medicine room. Then, your provider (usually a nuclear medicine technologist) will:
After your salivary gland scan, you can resume normal activity unless your provider tells you otherwise. To avoid exposing others to any remaining radioactive tracer in your body, you should:
The benefits of this scan outweigh the risks for most people who need this test. The amount of radioactive substance you receive is low and usually leaves your body within one day. However, certain people may need to avoid or delay this test, including those who are:
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In most cases, a radiologist will examine the images from your scan. They’ll send information to your referring healthcare provider, who’ll discuss the results with you.
A normal result means the tracer moves through your salivary glands without any blockage or slowdown. An abnormal result may mean that the tracer:
If you receive a new diagnosis, your provider may discuss your treatment options or refer you to another specialist for care. In some cases, you may need additional tests, like a biopsy, to get more information before you can receive a diagnosis.
A note from Cleveland Clinic
A salivary gland scan is a noninvasive test that can identify conditions that affect your salivary glands. It’s usually painless and requires no special prep or aftercare. If you’re stressed or concerned about the test, tell your provider. They’re here to support you and help you get the best care. Together, you can discuss why you need the test and how to be as comfortable as possible throughout the process.
Last reviewed on 06/13/2024.
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Cleveland Clinic is a non-profit academic medical center. Advertising on our site helps support our mission. We do not endorse non-Cleveland Clinic products or services. Policy