Method for determining the application of a sample fluid on an a

Details Method for determining the application of a sample fluid on an a Method for determining the application of a sample fluid on an a

1997-12-10

2000-05-30

Wallenhorst, Maureen M.

Chemistry: analytical and immunological testing

Rate of reaction determination

436 95, 436164, 422 8201, 422 8202, 422 8205, G01N 3349

Patent

active

060690119

ABSTRACT:
A method for determining the application of a sample fluid on an analyte strip using first and second derivatives. Sample fluid, such as whole blood, is applied to a reagent matrix and sensor readings, such as reflectance readings or current readings, are taken of the fluid/reagent combination. The first and second derivatives of the sensor readings are calculated. A predetermined incubation time period is begun at either a local minimum in the first derivative or a local maximum following a local minimum in the second derivative data. At the expiration of the incubation period, another sensor reading is taken which is indicative of an analyte concentration in the sample fluid (such as glucose concentration in a whole blood sample).

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