APPARATUSES FOR DETECTING DEGRADED TEST CHEMICALS IN ANALYTICAL TEST ELEMENTS

摘要

Analytical apparatuses are disclosed for detecting at least one analyte in a sample, where in an analyte measurement at least an electrical or optical property changeable by presence of the analyte at least one test chemical of a test element is recorded, and where the analytical apparatus also can perform at least one quality measurement on the at least one test chemical such as an intrinsic luminescence, which is recorded and from the intrinsic luminescence a conclusion is drawn on a quality of the test chemical and thus the test element. Methods also are disclosed for detecting at least one analyte in a sample that include a quality measurement of the at least one test chemical of the test strip.

主权项

1. An analytical apparatus for measuring an analyte concentration, the apparatus comprising:
at least one test element for measuring the analyte concentration, wherein the at least one test element has at least one test field, the at least one test field being an area in which at least one cohesive layer of at least one test chemical is applied to a carrier element or os incorporated into the carrier element; at least one quality measurement device configured to measure at least one intrinsic luminescence of the at least one test chemical before a fluid sample is applied to the at least one test field of the at least one test element; at least one analyte measurement device configured to measure the analyte concentration after the fluid sample is applied to the at least one test field of the at least one test element; and at least one evaluation device configured to record the analyte concentration and to record the at least one intrinsic luminescence in at least a first intrinsic luminescence or at least a first intrinsic luminescence spectrum in a first wavelength interval and at least a second intrinsic luminescence or at least a second intrinsic luminescence spectrum in at least a second wavelength interval, wherein the at least one evaluation device is further configured to determine a quality of the at least one test chemical, wherein the quality comprises at least one item of quality information that indicates degrading or aging of the at least one test chemical.