OneTouch Select Plus Simple blood glucose monitoring system components. An arrow pointing to the color bar on the meter casing indicates if the current blood glucose result is low (blue bar), in range (green bar), or high (red bar) to a target blood glucose range. The system uses OneTouch Select Plus blood glucose test strips and Delica lancing devices and contains a reference information card in the system kit that has space for health care professionals to write instructions and advice to their patients.