Instrumentation Laboratory has received complaints of heparin controls reporting low out of their assigned acceptance range with HemosIL Liquid Anti-XA, leading to delays in patient testing. Our internal investigation has identified that the value assignment of the HemosIL Heparin Calibrators has shown a bias against the who international standards for UFH and LMWH, potentially causing reduced recovery when measuring heparin on both controls and samples. Recall start date: December 18, 2024
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