False-positive cryptococcal antigen latex agglutination caused by disinfectants and soaps
نویسندگان
چکیده
منابع مشابه
New cause for false-positive results with the cryptococcal antigen test by latex agglutination.
The highly specific and sensitive latex agglutination test for cryptococcal antigen detection in cerebrospinal fluid is routine in many hospitals. Contamination of cerebrospinal fluid by a minute amount of syneresis fluid (surface condensation) from agar gave a strongly positive reaction which was heat stable, was not eliminated by pronase treatment, and was not detected by the normal rabbit gl...
متن کاملFalse positive latex tests for cryptococcal antigen in cerebrospinal fluid.
on the instrument, its date, its inventor Lee or the manufacturing or supplying firm ofAL Hawkins Ltd, London. Another machine "The Sedigraph" made by a Swiss firm after the Second World War acted in a similar fashion with rather more sophistication. One of these instruments is also in the collection. The collection of old instruments nlow numbers about 1000 items which, it is hoped, will form ...
متن کاملFalse-negative cerebrospinal fluid cryptococcal latex agglutination tests for patients with culture-positive cryptococcal meningitis.
Three cases of false-negative cerebrospinal fluid latex agglutination test results for patients with culture-positive cryptococcal meningitis are reported. False-negative results occurred in settings of low cryptococcal antigen concentrations in cerebrospinal fluid and were dependent on the latex agglutination test kit used. Investigation of each case revealed that prozone phenomena or interfer...
متن کاملNew cause for false-positive results with the Pastorex Aspergillus antigen latex agglutination test.
The Pastorex Aspergillus antigen test for detection of Aspergillus galactomannan antigen in the sera of patients with invasive aspergillosis is used in many clinical laboratories. A serum sample contaminated with Penicillium chrysogenum gave a strongly positive reaction (1:128) which was heat stable, was not eliminated by pronase treatment, and was not detected by a normal rabbit globulin contr...
متن کاملFalse-positive reactions in the latex agglutination test for Cryptococcus neoformans antigen.
The latex agglutination test for Cryptococcus neoformans antigen is a simple and rapid procedure for the diagnosis of cryptococcal meningitis. Although the test is sensitive, care must be taken to prevent contamination of the sample, which may result in false-positive reactions. It was discovered in our laboratory that immersion of a platinum wire inoculating loop into a sample of cerebrospinal...
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ژورنال
عنوان ژورنال: Journal of Clinical Microbiology
سال: 1995
ISSN: 0095-1137,1098-660X
DOI: 10.1128/jcm.33.6.1674-1675.1995