False positive latex tests for cryptococcal antigen in cerebrospinal fluid.
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چکیده
منابع مشابه
False 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 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 کاملEvaluation of new monoclonal antibody-based latex agglutination test for detection of cryptococcal polysaccharide antigen in serum and cerebrospinal fluid.
We evaluated the performance of CRYPTO-LEX (Trinity Laboratories, Inc., Raleigh, N. C.), a new mouse immunoglobulin M monoclonal antibody latex agglutination reagent which reacts with the capsular polysaccharide of the four serogroups of Cryptococcus neoformans. This test was compared with CALAS (Meridian Diagnostics, Cincinnati, Ohio) for the ability to detect cryptococcal antigen in serum and...
متن کاملInactivated pronase as the cause of false-positive results of serum cryptococcal antigen tests.
Four patients who had acquired immunodeficiency syndrome and who were evaluated for headache within a 3-week period had false-positive results of serum cryptococcal antigen tests. This cluster of false-positive test results appeared to be due to inactivation of the pronase vial in the test kit, a cause that has not been reported previously.
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ژورنال
عنوان ژورنال: Journal of Clinical Pathology
سال: 1982
ISSN: 0021-9746
DOI: 10.1136/jcp.35.2.244