A patient specimen is analyzed on an instrument known to be in control from previous assays performed on a calibrated instrument and gives a hemoglobin result of 13.2 g/dL. Two hours later it is evaluated on another instrument that is being evaluated for purchase by the laboratory. The result is 11.8 g/dL. This result, when compared with the first, is:

Question

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The difference between the two results (13.2 g/dL and 11.8 g/dL) is significant, indicating that the second result is inaccurate when compared to the first result from the calibrated instrument known to be in control.

A Patient Specimen Is Analyzed on an Instrument Known to Be