Lipoprotein cholesterol detection method and kit
A kit and cholesterol technology, which is applied in biochemical equipment and methods, measuring devices, microbiological determination/inspection, etc., can solve the problems of large low-end deviation of determination reagents, inability to achieve accurate detection, large deviation of external quality assessment, etc. , to achieve high accuracy, meet the linear requirements of reagents, and good stability
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Embodiment 1
[0055] The preparation of embodiment 1 kit
[0056] Taking the small and dense low-density lipoprotein cholesterol detection kit in the prior art as an example, the kit is divided into two reagent compositions, R1 and R2, and the specific formula is as follows:
[0057]
Embodiment 2
[0058] Example 2 Determination method
[0059] Mix the serum sample to be tested with reagent R1, keep the temperature at 37°C for 5 minutes, and measure the absorbance A 1 , then add reagent R2, mix well, keep the temperature at 37°C for 5min, measure the absorbance A 2 , calculate ΔA=A 2 -A 1
[0060] (2) Use a fully automatic biochemical analyzer (Hitachi 7180) to measure the absorbance difference after the reaction (the main wavelength is 546nm, the secondary wavelength is 660nm, and the reading point of the instrument is 16-34);
[0061] (3) Calculate the concentration of sdLDL-C in the sample according to the change value of absorbance.
[0062] Preferably, for the serum sample described in step (1), the volume ratio of the reagent R1 to the reagent R2 is 3:150:50.
[0063] (4) Linear experimental method:
[0064] Use high-concentration samples close to the upper limit of the linear range and low-concentration samples close to the lower limit of the linear range, a...
Embodiment 3
[0085] Example 3 Concentration Screening of Color Source Substances
[0086] 1. Experimental method:
[0087] According to the components and contents of the kit in Table 1, prepare reagents containing different color source substances, wherein TOOS is used as the color source material, and the concentrations are: 0.4mM, 0.8mM, 1.6mM, 2.0mM, 3.2mM. Use reagents with different TOOS concentrations for linearity verification, and the linearity method and requirements are the same as above.
[0088] 2. Experimental results:
[0089]
[0090]
[0091]
[0092] It is found through experiments that the correlation coefficient r of the assay kit meets the requirements, but from Table 2, it can be seen that the low-end deviation of the reagent kit in Table 1 is relatively large, and the linearity is poor. The present invention adjusts the concentration of the color source substance , when the concentration is 0.4mM-3.2mM, it does not conform to the range of 40-200mg / L, and t...
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