Joint detection method for rheumatoid factors (IgM type) and other antigen-specific IgM antibodies
A rheumatoid factor, specific technology, applied in the direction of measuring devices, biological tests, material inspection products, etc., can solve the problems of inaccurate results and the inability to realize the detection of rheumatoid factor, etc.
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Embodiment 1
[0082] This example is used to illustrate the verification method and results of the highly specific anti-human IgM antibody selected in the present invention.
[0083] Method 1 includes: Purified human IgG with a concentration of 1ug / ml, 100ul / well coated in a polystyrene microwell plate at 4 overnight; use 3% bovine serum albumin (BSA), 200ul / well, 37 degrees for 2 hours Blocking; then add anti-human IgM-HRP, 100ul / well, 37 degrees for 30 minutes, after washing, add TMB chromogenic solution, and detect OD with a microplate reader after 10 minutes in the dark 450nm-630nm ; And make positive control wells and blank control wells coated with human IgM; they are all multi-well parallel, and calculate the mean value. The test results are shown in Table 1.
[0084] Method 2 includes: the test strip includes a sample pad, a conjugate pad, a nitrocellulose membrane and a water-absorbent pad that are attached sequentially on a polyvinyl chloride rubber sheet; the sample pad is a gla...
Embodiment 2
[0091] This example is used to illustrate the joint detection test strip and kit of rheumatoid factor (IgM type) and other antigen-specific IgM antibodies and the preparation method thereof of the present invention.
[0092] Such as figure 2 As shown, the test strip of the present embodiment comprises a sample pad, a conjugate pad, a nitrocellulose membrane and a water-absorbent pad attached successively on a polyvinyl chloride rubber sheet; the sample pad is a glass fiber membrane; the conjugate The pad is a glass fiber membrane with an anti-human IgM antibody-colloidal gold conjugate; the nitrocellulose membrane is respectively coated with a first detection line, an adsorption line, a detection line and a quality control line; the first detection line The line is denatured rabbit / human IgG, the adsorption line is an antibody against human IgG, the quality control line is human IgM, and the detection line is the purified Mycoplasma pneumoniae-specific natural multi-epitope a...
Embodiment 3
[0102]This embodiment is used to illustrate the application of the test strip or kit prepared in Example 2 in the detection of RF (IgM type) and Mycoplasma pneumoniae samples.
[0103] The steps of using the test strip are as follows:
[0104] (1) Collect serum samples;
[0105] (2) Put the test strip flat on the detection table, add 100 μl of the serum sample in step (1) dropwise to the sample pad, observe the color development results of the first detection line, detection line and quality control line after 10 to 15 minutes, The color development result after 30 minutes is considered invalid;
[0106] (3) Judgment of results: Judgment results according to Table 3, where "+" means that the red band is displayed, "-" means that the red band is not displayed, and " / " means that the red band is displayed or not:
[0107] table 3
[0108]
[0109] The test strips prepared in Example 2 were used to detect clinically confirmed positive and negative sera, and the results are ...
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