Healthcare and Medicine! Diabetes testing. A finger is pricked for a drop of blood. The blood is collected by the Test Meter with a Test Strip, and the blood is read for the blood level. Determines whether a person is a diabetic, or when you are a diabetic, let’s you know how much insulin to be injected, or if you need to take medications to dilute your insulin. Type 1 and Type 2 diabetes affect a body differently, but both can be life threatening if not monitored and treated promptly. Control is best.