Tiny, 0.5 microliter blood sample.nTrueMetrixnDetects sample environment, sample size, control solution.nCorrects hematocrit/temperature.nAnalyzes environmental and physiological factors.nTrue Metrix Blood Glucose Test Strips box of 50 By Nipro DiabnosticsNipro Diagnostics True Metrix Blood Glucose Test Strips box of 50 features advanced technologies - a complex algorithm chemistry and electrodes the meter and the test strip work together as part of the True Metrix Self-Monitoring Blood Glucose System to produce accurate results. With True Metrix accuracy is confidence.