Immunoturbidimetric assay for rheumatoid factor using an enzyme
نویسندگان
چکیده
receiving full dose heparin (A kaolin clotting time; 56, 29, and 19 seconds) and four had been considered to have equivocal lupus inhibitor tests. On testing of subsequent samples from three of the equivocal patients, one with a A kaolin clotting time of 29 seconds was found to have a definite lupus inhibitor while the two others (19 and 14 seconds) were negative. The A kaolin clotting time in the two positive patients with normal PTTKs was 14 and 34 seconds and in the positive patients with normal APTTs the A kaolin clotting time range was 14-150 seconds with a mean (SD) of 24-6 (21-6) seconds.
منابع مشابه
Improved immunoturbidimetric method for rheumatoid factor testing.
The performance of two immunoturbidimetric modifications for rheumatoid factor (RF) testing, which differ with respect to the means of complement inactivation (heat treatment and inactivation with polyvinyl sulphonate), were compared in serum samples from 87 patients with rheumatoid arthritis (RA) and from 403 healthy subjects. IgM-rheumatoid factor titres were also measured with an enzyme link...
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receiving full dose heparin (A kaolin clotting time; 56, 29, and 19 seconds) and four had been considered to have equivocal lupus inhibitor tests. On testing of subsequent samples from three of the equivocal patients, one with a A kaolin clotting time of 29 seconds was found to have a definite lupus inhibitor while the two others (19 and 14 seconds) were negative. The A kaolin clotting time in ...
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A quantitative immunoturbidimetric assay for rheumatoid factors (RF) is described, based on the immunoprecipitation between aggregated human IgG and rheumatoid factors in serum. The resulting turbidity is measured photometrically at 340 nm. The method is standardized against the WHO international reference preparation and the results are expressed in international units per milliliter (int. uni...
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