Lifescan Scotland Limited

John McInulty

Damian Edward Haydon Baskeyfield

Anthony J Cronshaw

Grenville Arthur Robinson

Thomas J O'Reilly

A method for determining a test strip calibration code for use in a meter includes inserting a test strip into the meter. The inserted test strip having a substrate with a working surface for receiving the body fluid sample and a reverse surface that is in opposition to the working surface. The test strip also includes a permutative grey scale calibration pattern disposed on either of the working and reverse surfaces, with the permutative grey scale calibration pattern including more than one grey scale region. Moreover, the scale regions of the test strip define a grey scale permutation that uniquely corresponds to a calibration code of the test strip. The method also includes detecting the permutative grey scale calibration pattern with a grey scale photodetector module of the meter and determining a calibration code that uniquely corresponds to a grey scale permutation defined by the permutative grey scale calibration pattern based on permutation matrix stored in the meter.

Method for determining a test strip calibration code for use in a meter

A system for measuring an analyte in a body fluid sample includes a meter, with a grey scale photodetector module, and a memory module. The system also includes a test strip. The test strip has a substrate with a working surface for receiving the body fluid sample and a reverse surface that is in opposition to the working surface. The test strip also includes a permutative grey scale calibration pattern disposed on either of the working and reverse surfaces, with the permutative grey scale calibration pattern including more than one grey scale region. Moreover, the scale regions of the test strip define a grey scale permutation that uniquely corresponds to a calibration code of the test strip. The grey scale photodetector module is configured to detect the permutative grey scale calibration pattern of the test strip when the test strip is inserted into the meter. The memory module has stored therein a grey scale permutation matrix with a plurality of calibration codes, each of the calibration codes uniquely corresponding to a grey scale permutation of the permutative grey scale calibration pattern.

System for analyte determination that includes a permutative grey scale calibration pattern

A calibration strip for use with a package of test strips includes a substrate with and a permutative grey scale calibration pattern disposed on a surface of the substrate with the permutative grey scale calibration pattern including more than one grey scale region. Moreover, the grey scale regions of the calibration strip define a grey scale permutation that uniquely corresponds to a calibration code of test strips in a package associated with the calibration strip.

Calibration code strip with permutative grey scale calibration pattern

A method for determining a test strip calibration code for use in a meter includes inserting a calibration strip into the meter, with the calibration strip having a substrate and a permutative grey scale calibration pattern disposed on the substrate. In addition, the permutative grey scale calibration pattern includes more than one grey scale region that define a grey scale permutation uniquely corresponding to a calibration code of test strips in a package associated with the calibration strip. The method also includes: (i) detecting the permutative grey scale calibration pattern with a grey scale photodetector module of the meter, and (ii) determining a calibration code that uniquely corresponds to a grey scale permutation defined by the permutative grey scale calibration pattern based on a permutation matrix stored in the meter.

Method for determining a test strip calibration code using a calibration strip

A test strip for the determination of an analyte, such as glucose, in a body fluid sample (for example, a whole blood sample) includes a substrate with a working surface for receiving the body fluid sample and a reverse surface that is in opposition to the working surface. The test strip also includes a permutative grey scale calibration pattern disposed on either of the working and reverse surfaces with the permutative grey scale calibration pattern including more than one grey scale region. Moreover, the scale regions of the test strip define a grey scale permutation that uniquely corresponds to a calibration code of the test strip.

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Westhill, United Kingdom

John McInulty