Automatic analyzer and the analyzing method using the same

摘要

An automatic analyzer which assures uniformity in mixing effects regardless of sample quantity and test item and thus produces analysis results with high repeatability. The automatic analyzer includes a device for adding a conditioning liquid into a reaction chamber so that the quantity of liquid in the reaction chamber becomes a predetermined quantity prior to being mixed. The conditioning liquid may be a diluent or physiological saline as used for dilution of a sample or any other special liquid that adjusts the properties such as viscosity, surface tension, etc. of liquid to be mixed.

主权项

1. An automatic analyzer provided with a reaction chamber in which a quantity of a sample and a quantity of a predetermined reagent according to a test item which indicates a type of test are provided, and a controller configured to control an automatic analyzing process of the reaction chamber, the automatic analyzer comprising:
a pipetting mechanism providing the predetermined reagent and a particular conditioning liquid to the reaction chamber; a photometric mechanism measuring properties of the sample by measurement of absorbance of a reaction liquid including the sample, the predetermined reagent and the particular conditioning liquid, a memory storing the quantity of the sample and the quantity of the predetermined reagent provided to the reaction chamber according to each test item and a predetermined target quantity of liquid in the reaction chamber, and wherein the controller is further configured to determine the particular conditioning liquid from amongst a plurality of different conditioning liquids corresponding to a plurality of test items and to control the pipetting mechanism to provide the determined particular conditioning liquid to the reaction chamber to control the properties of the reaction liquid within prescribed ranges in each test item in a quantity which is determined by subtracting the sum of the quantities of sample and reagent from the predetermined target quantity of liquid, which is predetermined commonly for the plural test items.