Abstract
Point-of-care (POC) coagulation tests with paramagnetic iron oxide particles have provided alternatives to testing previously done only in the laboratory. With this technology, POC fibrinolytic tests have followed quietly the trail blazed by POC clotting tests and have found specific applications. These include rapid verification of in vivo thrombolytic drug action by in vitro testing with subsequent quantitative drug monitoring of the systemic lytic state, and also the determination of in vitro thrombolytic drug response before the drug is actually administered, to individualize therapy by selection of the most appropriate drug. Other applications include POC coagulation factor assays associated with fibrinolysis, and most recently the POC screening of patients with fibrinolytic defects. In this latter application, plasma from cardiac catheterization (n = 19) and venous thrombosis (n = 47) patient groups were tested. Controls consisted of two independent donor pools (n = 10, n = 21) as negatives and two plasma samples with known genetic defects in the fibrinogen molecule (A alpha 554 Arg-->Cys) as positives.
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