Truemetrix Blood Glucose Test Strips are made for use with #06-RE4051-43 McKesson TRUE METRIX Self-Monitoring System, and #06-R5051-1, #06-R5051-2 and #06-R5051-3 McKesson TRUE METRIX Controls. This blood glucose strip only needs a small amount of blood sample, 0.5 microliters, for an effective, accurate reading. Truemetrix Blood Glucose Test Strips are smart in detecting sample size, sample size environment and even the control solution. Truemetrix Blood Glucose Test Strips analyzes environmental and physiological factors that help it to correct hematrocrit/temperature.