The OralCDx® BrushTest® is an easy, painless and definitive way for dentists to test the common small white and red oral spots that most people have in their mouth at one time or another. The BrushTest is used to determine if a common oral spot contains abnormal cells (known as dysplasia) that, if left alone for several years, may develop into oral cancer. The OralCDx BrushTest is an oral brush biopsy, and the ONLY non-invasive test for oral pre-cancer and cancer.