Evaluation of an enzyme immunoassay for detection of cryptococcal capsular polysaccharide antigen in serum and cerebrospinal fluid.
J Clin Microbiol
; 31(1): 97-101, 1993 Jan.
Article
en En
| MEDLINE
| ID: mdl-8417038
The Premier enzyme immunoassay (Meridian Diagnostics, Inc., Cincinnati, Ohio) was compared with a latex agglutination assay (CALAS; Meridian) for the ability to detect cryptococcal capsular polysaccharide antigen (CrAg) in serum and cerebrospinal fluid (CSF). A total of 594 specimens (471 serum samples and 123 CSF samples) obtained from 430 patients, most of whom were at risk for or had AIDS, were tested in parallel by both systems. Both tests were independently evaluated for their ability to (i) detect CrAg when used as a screening test and (ii) quantitate the CrAg present when used as a titration assay. Chart review to assess clinical outcome after the time of specimen collection was conducted for all patients. When both assays were used as screening assays, 103 serum samples and 18 CSF samples were positive and 356 serum samples and 104 CSF specimens were negative by both assays (97.8% concordance). Thirteen specimens (12 serum samples, 1 CSF sample) gave discrepant screening results. When the tests were used as semiquantitative assays for titer determinations, the CrAg titers determined by the enzyme immunoassay were generally higher than those obtained with the latex agglutination assay. In summary, results obtained with the enzyme immunoassay correlated well with those obtained with the latex agglutination test for screening for the presence of CrAg and for determining the titer of CrAg in serum or CSF.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Técnicas para Inmunoenzimas
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Meningitis Criptocócica
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Cryptococcus neoformans
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Antígenos Fúngicos
Tipo de estudio:
Diagnostic_studies
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Evaluation_studies
Límite:
Adult
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Aged
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Aged80
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
J Clin Microbiol
Año:
1993
Tipo del documento:
Article
Pais de publicación:
Estados Unidos