Patent ID: 7998666

Claim:
An analyte test element for determining the concentration of at least one analyte in a physiological or aqueous sample fluid having a first surface ( 2 a ) and a second surface ( 4 a ) opposite from each other, said first and second surfaces are provided with two equivalent patterns, forming areas of high and low surface energy, which are aligned mostly congruent, whereby the areas of high surface energy ( 6 , 6 ′) create a sample distribution system with at least two detection areas ( 6 a , 6 ′ a ), characterized in that the detection areas ( 6 a ) of the first surface ( 2 a ) are provided with working electrodes ( 8 a ) and the detection areas ( 6 ′ a ) of the second surface ( 4 a ) are provided with corresponding reference electrodes ( 8 ′ a ) of electrochemical detection means, wherein n predetermined detection areas ( 6 a ) covering the working electrodes ( 8 a ) of said first surface ( 2 a ) are coated with a catalytic formulation promoting the electrochemical detection of an analyte in a physiological fluid, and n predetermined detection areas ( 6 ′ a ) covering the reference electrodes ( 8 ′ a ) of said second surface ( 4 a ) are coated with n calibration formulations made up of m blank formulations and n−m formulations with different levels of calibration compound, whereby n is an integer number larger than 2, m is an integer number equal or larger than 1, and n>m.