What do the results mean?
If you were tested before starting a treatment, the test can show whether a medicine will likely be effective and/or if you are at risk for serious side effects. Some tests, such as the ones for certain drugs that treat epilepsy and HIV, can show whether you are at risk for life-threatening side effects. If so, your provider will try to find an alternate treatment.
Tests that happen before and while you're on treatment can help your health care provider figure out the right dose.
If you have questions about your results, talk to your health care provider.
Learn more about laboratory tests, reference ranges, and understanding results.
