Customer reported imprecision results for ckmb on triage lot number w63532rb for a patient.On (b)(6) 2018, patient was tested and the following results were received: 7:30am: sample 1, resulted ckmb 5.3ng/ml; 10:30am: sample 2, redraw (new device) resulted ckmb 3.0ng/ml customers ckmb cut-off: 4.3ng/ml.Patient was administered heparin bolus followed by a heparin drip prior to the 10:30am draw and result.Patient outcome: flare up of chf with no mi.Patient is doing well in skilled bed at this time.Customer provided additional information on 2/27/2018 of their repeat testing for the two patient draws: repeat testing: sample 1 (same tube of 7:30am draw) using plasma resulted ckmb=4.4.Sample 2 (same tube of 10:30am draw) using plasma resulted ckmb=3.2, (3) sample 2 (same tube of 10:30am draw) using wb resulted ckmb=2.7.There is no information to suggest the triage ckmb result of 5.3ng/ml altered patient treatment.
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