NK Vue® is a simple blood test that measures the activity of NK (natural killer) cells. These immune cells have the ability to selectively kill tumoural cells. Therefore, they are part of the body’s arsenal to defend itself against cancers. The NK Vue® test is used specifically to improve colorectal cancer screening. In the event of a positive iFOBT (immunochemical fecal occult blood test) and low NK Vue® result, the patient has an increased risk of colorectal cancer and can therefore be prioritized for a colonoscopy.