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A latex fixation test, also called a latex agglutination assay or test (LA assay or test), is an assay used clinically in the identification and typing of many important microorganisms. These tests use the patient's antigen - antibody immune response.
The test is usually performed using commercially available test kits which detect the reaction of heterophile antibodies in a person's blood sample with horse or cow red blood cell antigens. These test kits work on the principles of latex agglutination or immunochromatography. Using this method, the test can be performed by individuals without ...
Gravindex is an agglutination inhibition test performed on a urine sample to detect pregnancy. [1] It is based on double antigen antibody reaction. The test detects the prevention of agglutination of HCG-coated latex particles by HCG present in the urine of pregnant women. [2]
Download as PDF; Printable version; ... Agglutination (biology) ... Lateral flow test; Latex fixation test; M. Magnetic immunoassay; Mantoux test;
The latex particle agglutination test (LAT) is a more sensitive method to detect H. influenzae than is culture. [40] Because the method relies on antigen rather than viable bacteria, the results are not disrupted by prior antibiotic use. It also has the added benefit of being quicker than culture methods.
Rapid diagnostic test (RDT) (dipstick and cassette), latex agglutination Early morning urine Tests in community settings without laboratories, which are disease-specific include tests for Chagas disease , cholera , COVID-19 , diabetes mellitus , hepatitis B and C, HIV , influenza , malaria, Streptococcal pharyngitis, sickling disorders ...
Others such as Shigella (and E. coli) and Salmonella are traditionally detected using a slide agglutination test. [6] [8] HLA types are originally determined with the complement fixation test. [9] Newer procedures include the latex fixation test and various other immunoassays.
The clumping became known as Gruber-Durham reaction. Gruber introduced the term agglutinin (from the Latin) for any substance that caused agglutination of cells. French physician Fernand Widal (1862–1929) put Gruber and Durham's discovery to practical use later in 1896, using the reaction as the basis for a test for typhoid fever. Widal found ...