Latex Fixation Tests
Mostrando 1-12 de 25 artigos, teses e dissertações.
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1. Detecção do vírus dengue pela técnica de aglutinação do látex modelo experimental.
Dengue is the arthropod-borne transmitted viral disease of highest worldwide prevalence in mortality and morbidity. The proportion is pandemic ranging 1.6 million of infected patients yearly. Clinical presentation associated to epidemiological factors such as dengue prevalence in the patients origin have been the only mean for early diagnosis. Laboratorial d
Publicado em: 2007
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2. Absorption of Rickettsia rickettsii antibodies by Rickettsia rickettsii antigens in four diagnostic tests.
Immunoabsorption profiles were determined for Rickettsia rickettsii antigens used in four confirmatory tests for detection of antibodies to Rocky Mountain spotted fever. A human serum reactive in the four tests was absorbed with each test antigen and then reexamined by all four tests. The results indicated that the whole organism and complement-fixation anti
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3. Diagnostic and prognostic characteristics of the enzyme linked immunosorbent rheumatoid factor assays in rheumatoid arthritis.
OBJECTIVE: To determine the diagnostic and prognostic test qualities of the enzyme linked immunosorbent assays (ELISA) for rheumatoid factor isotypes in rheumatoid arthritis (RA), and to compare them with the latex fixation test. METHODS: Rheumatoid factor tests were performed in 1988 consecutive new rheumatology outpatients within two months after their fir
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4. A COMPARISON OF THE ROSE-WAALER, LATEX FIXATION, “RA-TEST,” AND BENTONITE FLOCCULATION TESTS
The bentonite flocculation test of Bozicevich, Bunim, Freund, and Ward (1958), the latex fixation test of Singer and Plotz (1956), and the “RA-test” (a latex reagent for use as a slide test) of Hyland Laboratories have been compared with each other and with a modified Rose-Waaler test, the behaviour of which has been previously extensively investigated.
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5. Antibody Response of Animals to Mycoplasma pneumoniae Measured by Latex Agglutination
The standardization, application, and usefulness of latex agglutination for Mycoplasma pneumoniae antibody titration were investigated and compared with tetrazolium reduction inhibition and complement fixation. The sera of guinea pigs and monkeys reacted in a specific fashion, whereas rabbit serum required pretreatment to eliminate its nonspecific agglutinin
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6. Quantitative aspects of the latex-fixation and Whaaler-Rose tests.
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7. Determination of patient herpes simplex virus immune status by latex agglutination.
A rapid latex agglutination (LA) test was compared with complement fixation and enzyme immunoassay for the determination of herpes simplex virus immune status in sera of patients. Of 173 samples, 88% gave concordant results in all three assays (115 positive and 37 negative). The LA and complement fixation tests agreed 92% of the time, and the LA agreed with
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8. Standardisation of serological tests for rheumatoid factor measurement.
Standardisation of quantitative data obtained by several types of rheumatoid factor test was achieved by the use of a reference serum preparation. Interlaboratory comparability improved for the latex fixation test, the Waaler-Rose test, the IgM RF test by an enzyme linked immunosorbent assay (ELISA), and for the antiperinuclear factor test. Use of a common m
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9. Apparent false positive histoplasmin latex agglutination tests in patients with tuberculosis.
Serum specimens from patients admitted to a respiratory disease hospital were examined by the histoplasmin latex agglutination, the complement fixation, and the agar gel immunodiffusion tests. Of 300 sera examined, 21 (7.0%) gave an apparent false positive reaction at a dilution of 1:16 or greater. Fourteen (66%) of the 21 patients studied has culturally pro
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10. Rheumatoid arthritis in Kenya. II.Serological observations.
Sera from 48 Kenyan Africans with rheumatoid arthritis, 43 patients with other diseases, and 98 blood donors were tested for the presence of rheumatoid factor by latex fixation tests using human European, human African, and rabbit immunoglobulin, and a sheep cell haemagglutination test. In the patients with rheumatoid arthritis the frequency of rheumatoid fa
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11. Comparison of immunoblotting with other serological methods and virus isolation for the early detection of primary cytomegalovirus infection in allograft recipients.
Sequential specimens from nine allograft recipients were examined by using a variety of methods to detect primary cytomegalovirus (CMV) infection as rapidly as possible posttransplantation. Sera were examined for immunoglobulin G (IgG) and IgM antibodies by immunoblotting, enzyme immunoassay, and immunofluorescence and also by complement fixation, latex aggl
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12. Evaluation of a Microtiter Latex Agglutination Test for Histoplasmosis
Experiments were designed to evaluate a Microtiter latex agglutination (Micro-LA) test, as a serological aid in the diagnosis of histoplasmosis, and to compare this test with the conventional microtiter-complement fixation (CF) test for histoplasmosis. Sera tested were from cases of acute and chronic pulmonary and disseminated histoplasmosis, as well as from