What should I ask before a cancer scan or test?

Before a cancer test or scan, the National Cancer Institute suggests starting with the basics. Ask why the test is needed, and what your care team is looking for. The answer tells you the purpose. The test may be part of an initial diagnosis, or part of monitoring a treatment plan you are already on.

Preparation questions matter too. Ask how you should prepare, including anything about eating, drinking, or medicines beforehand. Ask whether the test involves contrast dye. Some imaging tests use it, and preparation can differ as a result. It is also reasonable to ask how long the test will take, so you can plan your day around it.

For results, ask when and how you will receive them, and who will actually explain what they mean. Results sometimes appear in a patient portal before a doctor has reviewed them. Normal ranges can also vary from person to person, so a number alone does not always tell the full story.

Finally, ask whether you are likely to need repeat testing. A single test usually cannot confirm a diagnosis or fully monitor how treatment is working.