Colloidal gold test strip for double-amplification system and preparation method thereof
A technology of colloidal gold test paper and amplification system, which is applied in biological testing, material inspection products, measuring devices, etc., can solve the problem of not further improving the sensitivity of colloidal gold, and achieve the effect of enhancing binding force, improving specificity, and improving sensitivity
Active Publication Date: 2011-06-22
GETEIN BIOTECH
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The invention belongs to the field of medical clinical immediate tests, and relates to a colloidal gold test strip for a double-amplification system and a preparation method thereof. The colloidal gold test strip for the double-amplification system comprises a test strip bottom lining, and a sample pad, a polyester film coated with a gold-labeled antibody, a coating film and absorbent paper whichare lapped with and adhered to the test strip bottom lining in turn, wherein the middle part of the coating film is parallelly provided with a detection line coated with streptavidin and an F(ab)2 fragment of a monoclonal antibody of an antigen to be detected, and a control line coated with a rabbit anti-rat immunoglobulin G (IgG) antibody; the F(ab)2 fragment of the monoclonal antibody of the antigen to be detected and biotin are coated in the sample pad; and the gold-labeled antibody is colloidal gold labeled protein A and the monoclonal antibody of the antigen to be detected. The test strip has the advantages of high specificity, sensitivity and detection speed, has low cost, is easy to operate, can be widely applied to the detection of the antigen to be detected, and lays a foundationfor the timely discovery and prediction and effective detection of diseases, and an instrument and equipment are not required to be used.
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Biotin MetabolismProtein A +10
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