Automatic analyze

Abstract

The present invention provides an index that uses, in an automatic analyzer, an approximate expression based on a theoretical chemical reaction formula derived from reaction process data, and automatically check for apparatus abnormalities, reagent deteriorations, and improper accuracy control during each continuous or individual inspection. Reaction process data, which is measured when the automatic analyzer determines the relationship between reaction absorbance and time, is approximated to ABS = A 0 + A 1 (1-e -kt) by the least-squares method. The resulting reaction start point absorbance A 0, final reaction absorbance A 1, reaction rate constant k, and residual error, which is the aggregate sum of differences between approximate values and measured values, are then used as the index of reaction status.

Description

technical field [0001] The present invention relates to an automatic analyzer for qualitative and quantitative analysis of biological samples such as blood and urine, and more particularly to an automatic analyzer equipped with a function of monitoring the response of an analyzer for clinical examination. Background technique [0002] In the automatic analyzer for clinical examination, a certain amount of samples and reagents are dispensed, stirred and reacted. The absorbance of the reaction solution is measured for a certain period of time, and the concentration of the component to be analyzed is obtained based on the measurement result. [0003] Patent Document 1 discloses that by approximating the relationship between the reaction time and the reaction product, the extent of the reaction rate, whether the reaction proceeds, and whether the reaction rate is fast or slow is examined. An approximate expression of this reaction rate generally uses an expression called a Logi...

AI Technical Summary

Problems solved by technology

When the reaction time is long, the time required for the reaction product to reach a certain concentration will be longer

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