HIT with Reflex to SRA
Heparin-induced Platelet Antibody With Reflex to Serotonin Release Assay
Diagnosis of Heparin Induced Thrombocytopenia is based on clinical criteria but serological confirmation is often necessary. The ELISA assay measures the Platelet Factor 4/Heparin Complex to IgG. When the ELISA test is positive, testing by Serotonin Release Assay (a platelet activation assay) is more predictive of thrombocytopenia and thrombosis
Transfer serum to a plastic transport tube. To avoid delays in turnaround time when requesting multiple tests on frozen samples, please submit separate frozen specimens for each test requested.
Room temperature: Unacceptable
Frozen: 6 months
Serum not separated from red cells; microbially contaminated, hemolyzed, lipemic, icteric, or heat-inactivated samples
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