Views: 0 Author: Site Editor Publish Time: 2024-03-29 Origin: Site
Automatic biochemical analyzer is a kind of medical equipment commonly used in various hospital laboratory departments, mainly used to determine various chemical components in human serum. The correct operation and use of the biochemical analyzer is very important for the accuracy and repeatability of the measurement results. Calibration material, reaction reagent, operator's operation method, calibration results, detection results are affected. In order to correctly use the biochemical analysis instrument, to ensure the accuracy of the detection results. Shengshi Dongtang collates the following suggestions.
The maintenance instrument should be operated according to the operation procedures, and timely daily maintenance, weekly maintenance, monthly and quarterly maintenance. Pay special attention to when one test item is transferred to another test item, the colorimetric cup must be cleaned in time to flush away the residual reaction liquid, otherwise it will cause the error of the test result.
The reagent used must be within the shelf life, and the reagent is generally stored at 2-8 ° C. Be sure to enter the setting parameters according to the reagent instructions. In order to ensure accurate detection, the reagent with large pollution can increase the liquid absorption, the general liquid absorption should be greater than 400μl, the general project is 500μl, and the maximum can be used to 700μl. To ensure that the cross-contamination rate is <1%.
1.Pretreat and preserve samples as required.
2. No clots and turbidity are allowed in the sample.
3. Certain substances in the sample such as drugs, anticoagulants, preservatives cannot affect the measurement.
4. The sample cannot be opened for a long time due to volatilization.
Biochemical detection has a variety of methods, the general usage are the end point method, rate method, two-point method and so on. The delay time refers to from the time when the measured liquid enters the colorimetric cup to the time when the actual test begins. Therefore, in order to make the specimen to be measured in the colorimetric pool temperature balance and micro bubbles disappear, a certain delay is necessary. In general, most end point methods have a delay of 5 seconds, while the rate method should not be less than 10 seconds below 25 ° C, the delay should not be less than 12 seconds below 30 ° C, and the delay should not be less than 15 seconds below 37 ° C. In addition, the reagent blank is generally selected by the two-point method, while the rate method does not have a blank.
