Each box of this On Call Blood Glucose Test Strips includes the following: 50 test strips Code chip Package insert If you decide to seriously monitor your blood glucose levels at home, you’ll need sufficient stocks of blood glucose test strips for your glucose meter. Each test strip in this On Call Plus Blood Glucose Test Strips (50 Test Strips) kit contains Glucose oxidase – a chemical that is used in blood glucose meters to measure the amount of sugar in the person’s blood. The test strip is easy to use with your On Call Plus Glucose Monitoring meter. Put the test strip in the monitor. Prick your skin using a sterile lancet and then touch the narrow opening at the end of the test strip (sample tip) to the blood sample. The sample size required is at 1uL. The On Call Plus Glucose Monitoring meter will beep to indicate that the sample size is sufficient and the measurement has started.