Test Directory

• SRA, Low Dose Heparin
• SRA, High Dose Heparin

Confirmatory assay used in the evaluation of heparin-induced thrombocytopenia (HIT).

Specimen Type: Serum

Collection Container: Gold Top, Serum Separator 

Alternate Collection Container: Red Top, Plain

Desired Specimen Volume: 1 mL

1. Collect a gold top, serum separator tube via venipuncture.

1. Separate serum from cells.
2. Transfer 1 mL of serum to a LabCorp pp transpak frozen purple tube.
3.  To avoid delays in turnaround time when requesting multiple tests on frozen samples, please submit separate frozen specimens for each test requested.

Transport to the laboratory frozen.

• Room temperature specimen received
• Grossly hemolyzed, icteric, and lipemic samples

See patient report.

The diagnosis of heparin-induced thrombocytopenia should not be based entirely on the results of the Heparin-dependent Platelet Antibody assay and should take into account the results of the immunologic HIT assay, presence and timing of thrombocytopenia in relation to heparin administration, the presence of thrombosis or other HIT-related sequelae, as well as determination of other causes of thrombosis.

• Functional HIT Assay