4SURE blood glucose test strips combine 4 gold electrodes with GDH-FAD enzyme. The β-ketone test strips have ϐ-Hydroxybutyrate Dehydrogenase as a reagent enzyme.

Blood glucose test strip expiration date is 24 months from date of manufacture; opening of vial has no impact on expiration date. β-ketone test strips are individually foil wrapped and have 18 months  shelf life.