Classification of biochemical analyzers
According to the degree of automation, biochemical analyzers can be divided into two types of semi-automatic biochemical analyzers: some operations in the analysis process (such as sample addition, temperature preservation, inhalation colorimetry, result recording, etc.) need to be done manually, while other operations are It can be done automatically by the instrument.
Fully automatic biochemical analyzer: The entire process from sample addition to result output is completely automated by the instrument. The operator only needs to place the sample on the reagent placement position of the analyzer, and select the program to start the instrument to wait for the test report. Fully automated The biochemical analyzer has a high degree of automation and has the functions of calibration and automatic correction, so the errors are relatively small, the results are more accurate, and the use is more convenient.
According to the structure of the reaction device, automatic analyzers can be divided into the following categories:
Flow type: (Pipeline type) The first-generation automatic biochemical analyzer mainly adopts the flow type, which means that the chemical reaction of each sample to be tested and the reagent with the same measurement item is completed in the process of flowing in the same pipeline.
Discrete: Refers to the chemical reaction of each sample to be tested and reagents mixed in their respective reaction cups
Most of the automatic biochemical analyzers currently used in clinical laboratories are discrete and have the advantages of simple structure and fast detection speed.
Centrifugal: It means that each sample to be tested is mixed with reagents in its respective reaction tank under the action of centrifugal force to complete the chemical reaction and measure.
shortcoming:
The same centrifuge plate can only analyze one item at the same time; the reaction plate has no automatic cleaning function; the analysis speed is slow.
Solid-phase reagent self-determined biochemical analyzer (also known as dry chemical automatic analyzer) is to solid-phase reagents on a carrier such as film or filter paper, and drop each sample to be tested on the corresponding test strip for reaction and measurement. Dry chemical analyzer has the advantages of quick operation and easy portability
Bag type: refers to the use of reagent bags instead of reaction cups and cuvettes, and each sample to be tested is reacted and measured in its own reagent bag;
