We compared the performance of the Meridian CALAS, Wampole Crypto-LA, Murex Cryptococcus latex agglutination assay, and the Meridian Premier EIA for the detection of cryptococcal antigen in serum and CSF. The assays demonstrated similar performance characteristics based on concordance values > or = 93% but important differences were noted in endpoint titers.
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Babady et al. (2009) studied this question.
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