In EU: This Product is CE Marked. Health Canada Licensed Enzyme Immuno-assay designed for measuring heparin-dependent antibodies of the IgG isotype, in human plasma or serum, or in any biological fluid where these antibodies must be measured. This assay measures only the IgG isotype, reported as the most associated with the clinical complications of heparin dependent antibodies (HIT/HITT), allowing confirmation of the diagnosis of HIT/HITT or its clinical suspicion. However, some cases associated with only IgM and/or IgA isotypes can be missed.