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Available Tests

  • HIT PF4 Ab (Heparin Induced Thrombocytopenia Platelet Factor 4 Antibody)

HIT PF4 Ab (Heparin Induced Thrombocytopenia Platelet Factor 4 Antibody)

Tube Type


Test ID   LAB5324
EPIC Order
CPT Code(s)   86022
Group/Individual Test   Individual
Laboratory   Special Coagulation
Tube Station   30
Specimen Routine:   
5.0 mL royal blue top tube or gold top tube
Unspun - 4 hrs
Room Temp - 4 hrs
Refrigerated - NO
Frozen - 6 months
Availability Routine: 3 runs/week: Monday, Wednesday, Friday
  STAT: Available upon approval by Laboratory Director
Turnaround Time   1-3 Business Days
Reference Range Normal: <0.400
Internal Reference 
Testing Specimen
Handling Instructions:
Centrifuge and aliquot.
Minimum 4 aliquots of minimum 0.5 mL. Use all serum. Freeze within 4 hours.

HIT Agg will reflex with positive HIT PF4 Antibody result on UNCH Inpatients.

Patient should be OFF Heparin for a minimum of 8 hrs.

Reviewed by gloria_crawford on December 08, 2017

Note: Reference ranges provided on this web site are for guidance only, and may not reflect the most recent changes. Refer to laboratory reports for current reference data.

UNC Hospitals
McLendon Clinical Laboratories
101 Manning Drive
Chapel Hill, NC 27514