The investigation confirmed that higher than expected vitros ck-mb results were obtained for non-vitros qc fluids processed using vitros ck-mb reagent lot 2240 on a vitros 5600 integrated system (s/n (b)(4)).The assignable cause was determined to be a sub-optimal vitros ck-mb calibration as the qc performance was unacceptable immediately after a calibration event.The cause of the sub-optimal calibration could not be determined, although a pre-analytical handling or storage issue could not be completely ruled out.Based on historical quality control results, a vitros ck-mb reagent lot 2240 performance issue is not a likely contributor to this event.Following re-calibration of vitros ck-mb lot 2240 using the same reagent pack and a fresh set of calibrator fluids, acceptable qc performance was obtained.
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The customer observed higher than expected vitros ck-mb quality control results obtained from non-vitros quality control (qc) fluids processed using vitros ck-mb reagent on a vitros 5600 integrated system.Cliniqa cardiac marker control level 1, lot 170616, results 4.52, 4.96 and 4.99 ng/ml, versus expected result 3.15 ng/ml biased results of the direction and magnitude observed may lead to inappropriate physician action if undetected.No erroneous patient sample results were obtained or reported from the laboratory.Ortho was not made aware of any allegation of patient harm as a result of this event.(b)(4).
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