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Proficiency test results for Afinion and DCA POC devices. Two different unknown samples (A) and (B) are provided by the American Proficiency Institute for each analysis period. These samples are run in replicate and the results are sent to the central lab. At each time point, the measurements were within the range defined by the upper and lower bound of the unknown samples. (a, b) DCA device. (c, d) Afinion device. The shaded area is the permissible range.
