Full-range C-reactive protein detection kit
A detection kit and reactive protein technology, applied in the field of medical immunology, can solve problems such as narrow measurement range, low sensitivity, inability to diagnose infectious diseases or observe curative effect, and achieve high sensitivity and accuracy, high accuracy , the effect of long-term stability
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Embodiment 1
[0023] The preparation of embodiment 1 full range CRP reaction kit
[0024] The kit of the present invention relates to the main raw materials of reagents as follows:
[0025] 1. Rabbit anti-human CRP antibody (20.5 mg / mL): The titer measured by indirect ELISA method is above 1:500000.
[0026] 2. latex: two kinds of styrene latexes that the present invention adopts are styrene latexes with carboxyl groups, and the average particle diameters of styrene latex particles are 60nm and 240nm respectively. Among them, 60nm was purchased from Bangs Company, and 240nm was self-made. The preparation method was: 4.2595g styrene (St), 0.6000g methacrylic acid (MAA), and water were added to a three-necked flask and stirred for 10-30min; , N into the mixed system for 30min 2 , then add 50ml of aqueous solution containing potassium persulfate and sodium chloride (which contains potassium persulfate 0.1065g, sodium chloride 0.0032g), and then continue to feed 20min of N 2 Then heat up to ...
Embodiment 2
[0033] The mensuration of embodiment 2C reactive protein
[0034] Detection tool: Hitachi 7060 automatic analyzer.
[0035] Analysis method: 2-point endpoint method; main wavelength: 570nm, secondary wavelength: 700nm; sample volume: 4.0μl (microliter); R1: 140μl; R2: 140μl; calibration method: spline function Spline; reaction direction: rising; determination Temperature: 37°C; after mixing the sample with R1, read the absorbance A at 10 seconds 1 ; Add R2 at 3-5 minutes, read absorbance A at 5 minutes 2 . The absorbance of the reaction was calculated as A 2 with A 1 calibration difference.
[0036] Calculation method: multi-point calibration, using spline function as the calculation mode, and making a dose / response curve according to the absorbance and reference serum value, and the sample content can be calculated on the dose / response curve according to its absorbance value.
[0037] Reference range: serum C-reactive protein1mg / L when healthy people have no infection, ...
Embodiment 3
[0038] Example 3 Test of various performance indicators of the full-scale CRP detection kit
[0039] 1. Sensitivity test
[0040] Measure the samples of 6 kinds of different CRP contents, each sample is measured 10 times, by calculating mean value and SD value, as can be seen from Table 1, the sensitivity of detection kit of the present invention is 0.3mg / L.
[0041] Table 1
[0042] CRP (mg / L)
Measurement times
average
2.6SD
M+2.6SD
M-2.6SD
0
10
0.0000
0.031
0.05
-0.02
0.1
10
0.0904
0.044
0.10
0.01
0.2
10
0.1878
0.056
0.16
0.04
0.3
10
0.2915
0.058
0.21
0.08
0.4
10
0.3977
0.044
0.23
0.12
0.5
10
0.4912
0.032
0.25
0.15
[0043] 2. High value linear determination
[0044] Measure 10 kinds of samples with differen...
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