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Figure 1 The percentage of values for cardiac troponin (cTn)T collected from the FRISC II study associated with elevated values for a point-of-care assay with less sensitivity and precision. Any cTnT value >0.01 ng/ml is abnormal. Note that even at a value 20 times the upper limit of normal (0.2 ng/ml) for cTnT, only 60% of the values with the less sensitive assay were detected. Thus, rather than troponin identifying 139 of the 154 patients who eventually died, the point-of-care assay identified only 98 patients. Reprinted, with permission, from James et al. (6). R-TnI = rapid troponin I.
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