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Heparin-PF4 Antibody (HIT)

Test Code
HEPAB


Alias/See Also
Heparin Induced Ab


Preferred Specimen
1 mL serum from plain red top tube


Minimum Volume
0.5 mL


Transport Container
Plastic vial


Transport Temperature
Frozen


Specimen Stability
Frozen 7 days, refrigerated 48 hours


Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis, gross lipemia, collection in SST tube


Report Available
2-3 days


Reference Range
<20 %


Clinical Significance
Thrombocytopenia in patients treated with heparin is relatively common and has diverse, sometimes multifactorial, causes. Among the possible causes of thrombocytopenia in such patients, immune-mediated heparin-dependent thrombocytopenia (HIT) is clinically important because of its frequency and its associated risk of paradoxical new or progressive thrombosis.


Performed By
Quest Diagnostics DEMO


Last Updated: April 14, 2017


The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.