The On Call Extra Glucose Meter Reliably And Accurately Measures The Glucose Concentration In Whole Blood From The Fingertip With The Included On Call Extra Test Strips . The Test Strips Are Simply Inserted Into The Measuring Device And Brought Into Contact With A Small Drop Of Blood 0.4 Micro Liters From Your Finger. After Just 4 Seconds You Will Receive A Laboratory Accurate Test Result. Regular Monitoring Of Blood Sugar Concentrations Is Particularly Important For People Suffering From Type 1 Diabetes. With The On Call Extra Measuring Device And The Associated On Call Extra Test Strips, The Measurement Can Be Carried Out Very Precisely And In Just A Few Moments. All Swiss Point Of Care On Call Extra Devices Meet The New Iso Standard: Iso 15197 2015. The Starter Package Contains Everything You Need For The First Measurements: The Measuring Device, The Test Strips, Lancets And A Lancing Device For Taking Blood.