Patent ID: 8182764

Claim:
A plurality of electrochemical test strips for measuring a concentration of an analyte of interest in a biological fluid, the plurality of test strips comprising: a first test strip, the first test strip comprising: a first substrate; a first measurement electrode formed on the first substrate; a first trace loop formed on the first substrate, the first trace loop having a first associated resistance; and a second trace loop formed on the first substrate, the second trace loop having a second associated resistance; wherein the first and second resistances define a first resistance ratio corresponding to first data encoded on the first test strip; and a second test strip, the second test strip comprising: a second substrate; a second measurement electrode formed on the second substrate; a third trace loop formed on the second substrate, the third trace loop having a third associated resistance; and a fourth trace loop formed on the second substrate, the fourth trace loop having a fourth associated resistance; wherein the third and fourth resistances define a second resistance ratio corresponding to second data encoded on the second test strip; wherein the first resistance ratio is different than the second resistance ratio.