The Accu-chek Active 50 test strips is for the determination of blood glucose. Contains 50 test strips and suitable for self testing, to be used only with Accu-chek Active blood glucose monitoring system. After opening, blood glucose test stripes can normally be used for three to six months. Accuracy is Key when testing your blood sugar and this Accu-chek Active test strips will get you accurate answers of your blood sugar level. Accu-chek instant test strips offers convenient and reliable handling, just apply a blood drop anywhere along the edge of the wide dosage edge.