Heparin Induced Thrombocytopenia, Reflex to Serotonin Release Assay


Sunquest Code:HITR  
Epic Code:LAB7075Epic Name:Heparin Induced Thrombocytopenia, Reflex
Synonyms:HIT; HIT Reflex; HITSC; HITET
Methodology:Immunoassay; Serotonin release assay if reflexed.
CPT Code:----------CPTCODES HERE----------
Turnaround Time:Mon-Sat: If specimen is received by 1 pm in the Special Coag lab, the test will be done that day. For urgent testing after hours call 612-273-5551 to contact the tech on call.
Associated Links:

Specimen Collection and Processing for Coagulation Specimens



Collection Instructions

Specimen:Blood
Optimal Volume:Blue Na Citrate: 2.7 mL (in 3 mL tube) and Red or gold (gel) or Red (no gel): 10 mL.
Minimum\Peds Volume:Blue Na Citrate: 1.8 mL (in 2 mL tube) and Red or gold (gel) or Red (no gel): 2.2 mL.
Container:Red or gold (gel) AND Blue Na Citrate, 3.2% - fill to fill line on tube (Red (no gel) AND Blue Na Citrate, 3.2% - fill to fill line on tube)
Collection Instructions:Collect both Blue Na Citrate and a Red or Gold (gel), or a Blue Na Citrate and a red (no gel) tube.
See link to Specimen Collection and Processing for Coagulation Specimens.
Causes for Rejection:Underfilled tubes, clotted specimens, specimens not received or processed and frozen within 4 hours of collection. Samples with excessive hemolysis, icterus or lipemia should not be used.


Processing and Shipping

Specimen Processing:See link to Specimen Collection and Processing for Coagulation Specimens.
Shipping Instructions:See link to Specimen Collection and Processing for Coagulation Specimens.
Test Performed at or Referral Lab Special Coagulation  (UMMC-East Bank)


Interpretive

Critical Range:Positive
Reference Range:Negative
Use:HemosIL HIT-Ab (PF4-H) is a qualitative, fully automated, latex enhanced immunoassay for the detection of anti-platelet factor 4/heparin (PF4/H) antibodies. The positive or negative result aids in determining the risk for heparin induced thrombocytopenia (HIT) when used in conjunction with other laboratory and clinical findings. Anti-PF4/Heparin antibodies are commonly found in patients with HIT. For use in adult population suspected of HIT. Not for use in isolation to exclude HIT,


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