Get fast, accurate results with the On Call Express Blood Glucose Test Strips. Developed with advanced biosensor technology, these test strips require no coding and feature auto calibration circuitry in every strip. With a tiny sample size of 0.4 microliters and alternate site testing from palm or forearm, experience less pain and get results in only 4 seconds. This reliable and affordable test strip even offers a second chance drop to prevent wasting strips. Package includes one vial of 50 On Call Express Blood Glucose Test Strips and instructions in English and Spanish.