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A customer contacted the ortho clinical diagnostics (ortho) technical solution center (tsc) to report lower than expected lactate (lac) results were obtained from college of american pathologists (cap) proficiency samples and a non-vitros biorad quality control fluid using vitros chemistry products lac slides lot 3534-0117-8020 on a vitros 5600 integrated system.Cap sample (b)(6) result of 7.4 mmol/l vs an expected result of 8.90 mmol/l cap sample (b)(6) result of 3.0 mmol/l vs an expected result of 3.83 mmol/l cap sample (b)(6) result of 6.1 mmol/l vs an expected result of 7.56 mmol/l cap sample (b)(6) result of 2.6 mmol/l vs an expected result of 3.27 mmol/l biorad lot 45910 level 3 results of 4.43, 4.49, 4.44, 4.41, 4.40, 4.47, 4.37, 4.36, 4.39, 4.58, 4.40, 4.40, 4.37, 4.46, 4.41, 4.36, 4.42, 4.48, 4.42, 4.61, 4.37, 4.36 and 4.45 mmol/l vs an expected result of 5.45 mmol/l biased results of the magnitude and direction observed may lead to inappropriate physician action if they were to occur undetected on patient samples.The lower than expected vitros lac results were obtained from proficiency samples and a non-vitros quality control fluid.The customer did not inform ortho that any erroneous patient results were obtained or reported from the laboratory.Ortho has not been made aware of any allegation of patient harm as a result of this event.This report corresponds to ortho clinical diagnostics inc (ortho) complaint number (b)(4) and reportability assessment (b)(4).
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