The FreeStyle Libre is a revolutionary continuous glucose monitoring system that consists of a 3-in-1 reader and replaceable sensors. The reader can be used to scan the sensor, monitor blood glucose levels from test strips and from blood ketone strips. With Abbott’s Flash Glucose Monitoring System, you get a glucose reading with a quick painless scan without pricking your finger. The wearable sensor and reader help you to check your glucose anytime, anywhere. Each scan of the reader shows the current glucose reading , last 8 hours of data and a trend arrow indicating if glucose is going up, down or staying steady.