Biosensor with coded information and method for manufacturing the same

An electrochemical test sensor for determining the concentration of an analyte in a fluid sample, the electrochemical test sensor comprising:

• a base;
• a reagent layer;
• a lid;
• and a meter contact area having a plurality of contacts,
• the contacts having a first testing contact, a second testing contact and at least four coding contacts, at least a first electrical connection being formed between the first testing contact and a first one of the plurality of coding contacts, at least a second electrical connection being formed between the second testing contact and a second one of the plurality of coding contacts, and a plurality of electrical connections being formed between the plurality of adjacent coding contacts, wherein at least one of the connections in the meter contact area is terminated to encode calibration information on the test sensor.

An electrochemical test sensor for determining the concentration of an analyte in a fluid sample, the electrochemical test sensor comprising:

• a base;
• a reagent layer;
• a lid;
• and a meter contact area having a plurality of contacts,
• the contacts having a first testing contact, a second testing contact and at least four coding contacts, at least a first electrical connection being added between the first reference contact and a first one of the plurality of coding contacts, and at least a second electrical connection being added between two of the plurality of adjacent coding contacts to encode calibration information of the test sensor.

A method of encoding calibration information onto a single test sensor adapted for use in determining a concentration of at least one analyte in a body fluid, the method comprising the acts of:

• providing a test sensor having a plurality of electrical contacts, each of the plurality of electrical contacts being electrically connected to at least one adjacent contact via at least one connection;
• determining a reactivity level of the test sensor;
• terminating at least one connection electrically connecting two adjacent contacts;
• and
• calculating a ratio of conductivities between pairs of adjacent contacts of the plurality of electrical contacts after the act of terminating, the ratios of conductivity providing information to a test meter regarding the calibration of the test sensor.

A method of encoding calibration information onto a single test sensor adapted for use in determining a concentration of at least one analyte in a body fluid, the method comprising the acts of:

• providing a test sensor having a plurality of electrical contacts;
• determining a reactivity level of the test sensor;
• forming at least one connection electrically connecting two adjacent contacts;
• calculating a ratio of conductivities between pairs of adjacent contacts of the plurality of electrical contacts after the act of forming, the ratios of conductivity providing information to a test meter regarding the calibration of the test sensor.

An electrochemical test sensor for determining the concentration of an analyte in a fluid sample, the electrochemical test sensor comprising:

• a base;
• a reagent layer;
• a lid;
• and a meter contact area having a plurality of contacts, a reference electrical connection being formed between adjacent ones of the plurality of contacts, wherein at least one additional electrical connection in the meter contact area encodes calibration information on the test sensor.