The On Call Extra blood glucose test strips offer exceptional accuracy and convenience for diabetes management. Designed to exceed industry standards, these strips require a minimal blood sample and provide results in just 4 seconds. With their slim profile, blood is applied to the end of the strip, where it is absorbed and undergoes a reaction in the reaction cell, generating an electric current. This current is used by the ACON On Call Extra Glucometer to determine and display the blood glucose level. Ideal for both Type 1 and Type 2 diabetic patients, each pack contains 50 test strips and is compatible with the On Call Extra, On Call Extra Mobile, and On Call Extra Voice meters.