Accu-Chek Performa Test Strips are specifically designed for use with Accu-Chek Performa blood glucose monitoring systems. Each box contains 50 test strips for accurate blood glucose measurements. These test strips are compatible only with Accu-Chek Performa and Accu-Chek Performa Nano meters. The strips come in a protective vial to maintain their integrity and accuracy. Being a medical testing product used for blood glucose monitoring, proper storage and handling is essential for accurate results.