The initial reporter questioned high results using 1 particular reagent lot for 31 patient samples tested for creatinine plus ver.2 (crep2) on a cobas 8000 core unit.Of the data provided, the results for 1 patient sample were discrepant between 2 different reagent lots.Using reagent lot 499631, the result was 80 umol/l.Using reagent lot 484666 (expiration date not provided), the result was 66 umol/l.Questionable results were reported outside of the laboratory.The 8000 core unit serial number was (b)(4).
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