A sample rack containing eight sample tubes was placed on the analyzer to test for prothrombin time (pt) and an international normalized ratio (inr) tests.When reading the sample identification (id) by the built-in barcode reader, a barcode driver error occurred after reading the first sample's barcode.The system assigned the first sample id to the subsequent samples in the sample rack, giving all eight samples the same sample id.The software did not display an alert to the operator of the repeated sample ids.The operator noticed that multiple samples had the same id and did not report any of the results.There was no impact to any patient management.
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