We started using the bd lithium heparin tubes (367962, lot # 8061753 on (b)(6) 2018 and continued until (b)(6) 2018) when we identified this problem.The bd lithium heparin separator tubes have a positive bias for ast of approx 50%.Sodium's and calcium also could have a problem of slight positive bias.While only one patient is listed above, we will be re-drawing blood and repeating tests for approx 205 patients.An unk number of patients received additional testing (lab and imaging) as a result of their abnormal results.Several physicians questioned results of patient that had routine/previous testing which initiated our investigation.After determining the vacutainer tube could be the cause, we removed this product which all had the same lot number.
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