The cause of the reported incident, the administration of an extra dose of heparin is the discrepancy between therapeutic range values for heparinized patients between two facilities.There is no indication of erroneous results reporting by the complainant facility, (b)(6).This first facility follows the general recommendations for performing heparin therapeutic range testing with every change between old and new lots of aptt reagents and tracking the cumulative difference between lots.Siemens healthcare has provided the second facility, (b)(6), with the 2014 siemens white-paper on therapeutic heparin testing to evaluate their current practices.The actin fsl aptt reagent is performing within specifications.No further evaluation of the device is required.
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