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Test Code HEPXA Heparin Anti-Xa Factor

Additional Codes

N/A

Alias

Anti-Xa

Collection Method

Venous Collection

Container

Blue sodium citrate tube

Instructions/Special Handling

None

Preferred Specimen

Blue sodium citrate tube

Acceptable Specimes

Blue sodium citrate tube

Units

IU/mL

Reference Ranges

  • Heparin Therapeutic Range            0.30 - 0.70 IU/mL
  • Lovenox Therapeutic Range
    • 1mg/kg dose q 12 hours     0.60 - 1.00 IU/mL
    • 1.5mg/kg dose q 24 hours  1.00 - 1.90 IU/mL

Critical Values

>1.00 IU/mL

 

Reasons for Rejection

Hemolysis N/A
Icterus N/A
Lipemia Grossly lipemic
Other QNS, Contaminated, Improperly labeled, Improper specimen type, Clotted, Insufficiently or over filled tube

 

Specimen Stability

Ambient (15-25°C) 1 hours
Refrigerated (2-8°C) N/A
Frozen (-20°C) 2 weeks (-20°C) or 3 months (-70°C)

 

Performing Site

Boone Health Laboratory

Performance Information

Days/Times Performed Daily 24/7
Expected Turn around Time Same day
Methodology/Method Description ACL TOP - Competitive chromgenic substrate

CPT Code(s)

85520

Panel Components

N/A