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Editorial
Clarifies that the specific CKMB assay evaluated in a recent study is being replaced by a reformulated version.
A recent article by Apple et al. (1) presents plasma 99th percentile reference limits and analytical characteristics for the leading cardiac troponin and creatine kinase MB (CKMB) mass assays. It is important for the readers to understand that the CKMB assay used on the Access Immunoassay System for this study will no longer be available as of December 2003. In March 2003, Beckman Coulter released a new, reformulated assay with technical characteristics different from those reported by Apple et al.
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Lenette Walters (2004) studied this question.
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