Heparin antibodies, IgG specific

Alphabetical Test listing

Heparin antibodies, IgG specific-8771

  
Heparin antibodies, IgG specific
  
8771
  
LAB8771
  
GHA
  
HAT
Heparin induced platelet antibody
HIT
J&J COVID Vaccine
Janssen COVID Vaccine
Johnson & Johnson COVID Vaccine
PF4 antibody
PHA (poly)
Platelet factor 4 antibody
  

This is the first-line test for heparin antibodies in patients with suspected heparin-induced thrombocytopenia (HIT).

  
Sodium citrate (Na cit) plasma
  

Lt blue Sodium citrate (Na Cit) - 2.7mL

If the patient has a hematocrit >55, a specially prepared Lt blue Sodium citrate (NaCit) tube must be used in place of the standard Lt blue Sodium citrate (NaCit) tube.

Hematocrit-Anticoagulant adjustments

  
1.5 mL
  
  • Do not over or under fill tube as the ratio of anticoagulant to whole blood is critical

Coag – tube fill guidelines

  • Mix by gentle inversion 3 - 4 times

 

  
  
  

Frozen (strict)

Refrigerated - NO

  
  • Specimens collected in Grenier tubes 
  • Improper label (unlabeled or mislabeled)
  • Improper anticoagulant
  • Improperly filled tube
  • Hemolysis
  • Clotted specimen
  • Delay in transport
  • Improper storage/transport temperature
  • Patient on heparin > 1.0 IU/mL
  
AHL - Coagulation/Special Coagulation: V
  
Daily: 11am
  
1 - 2 days
Same day if received by 10:30am
  

Enzyme-linked immunosorbent assay (ELISA)

  

Negative

  
86022

Additional CPT codes (if appropriate):
86022
  
05/04/2011
  
01/13/2021
  
02/17/2020