- Patient Preparation
- Plain red or serum separator tube (SST).
- Specimen Preparation
- Separate serum or plasma from cells ASAP or within 2 hours of collection. Transfer 3 mL serum to an ARUP Standard Transport Tube. (Min: 2 mL) Also acceptable: ACD or sodium citrated plasma.
- Storage/Transport Temperature
- CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered. Ship on dry ice.
- Unacceptable Conditions
- Heparinized specimens.
- After separation from cells: Ambient: Unacceptable; Refrigerated: Unacceptable; Frozen: 1 month
For a clinical scoring system to assess pretest probability of HIT and other guidance for diagnosing HIT, refer to the Heparin-Associated Antibody Syndrome topic at arupconsult.com.
If ELISA result is positive, then Serotonin Release Assay (a functional assay with greater specificity for a clinical diagnosis of HIT syndrome) will be added. Additional charges apply.
|Component Test Code*||Component Chart Name|
|0051052||Heparin-Induced Thrombocytopenia Abs PF4|
- Heparin Induced Antibodies
- Heparin PF4 Antibody
- Heparin-Associated Antibody
- HIT Antibodies Reflex toSRA
- HIT IgG, IgM, IgA and SRA
- HIT PF4 Antibodies Reflex t SRA
- Type II HIT