TEMPERATURE COMPENSATION FOR AN ANALYTE MEASUREMENT DETERMINED FROM A SPECIFIED SAMPLING TIME DERIVED FROM A SENSED PHYSICAL CHARACTERISTIC OF THE SAMPLE CONTAINING THE ANALYTE
Various embodiments for a method, systems and meters that allow for a more accurate analyte concentration with a biosensor by determining at least one physical characteristic of the sample and compensating for the effects of ambient temperature with a defined relationship between temperature in the environment, the meter or the biosensor.
1 . A method of adjusting for the effect of temperature upon a biosensor having a plurality of electrodes with at least two electrodes provided with enzymes thereon, the method comprising the steps of:
applying a signal to the at least two electrodes;
initiating an electrochemical reaction between the at least two electrodes and an analyte in a fluid sample to cause a transformation of the analyte into a byproduct;
measuring a signal output from the at least two electrodes during the electrochemical reaction;
measuring a temperature proximate the biosensor;
calculating an analyte value representative of a quantity of analyte in the fluid sample from the signal output;
adjusting the analyte value to a final analyte value by a temperature compensation term defined by a relationship where:
(a) the temperature compensation term increases for increasing analyte values; and
(b) the temperature compensation term is inversely related to the biosensor temperature in a range of about 5 degrees Celsius to about 22 degrees Celsius;
(c) the temperature compensation term is about zero for the ambient temperature proximate the biosensor from about 22 degrees Celsius to about 45 degrees Celsius;
and
annunciating the final value representative of the quantity of analyte in the fluid sample.