ADAMTS13 Evaluation

Order Code: 1295 Get Requisition Form
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Test Information
ADAMTS13 Evaluation is a reflexive testing algorithm for evaluation of TTP. Activity is always performed. If result is <= 30%, the inhibitor assay (1297) is performed. If inhibitor result is <= 0.7 Inhibitor Units, the antibody assay (1299) is performed
Also Known As Icon
Also Known As
  • ADAMTS13
  • ADAMTS13 Activity
  • ADAMTS13 Inhibitor
  • VWF Cleaving Protease
Disease State Icon
Disease State
Thrombotic Thrombocytopenic Purpura
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Test Type
Functional/Serologic Test
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Sample Notes
Citrated Plasma (light blue top)
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Requested Volume
Three 0.5 ml aliquots
Minimum / Pediatric Volume Icon
Minimum / Pediatric Volume
Two 0.4 ml aliquots
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Additional Sample Information
Citrated plasma (preferred), serum (red tube) or Citrated whole blood (light blue tube) that has been stored at room temperature or refrigerated for up to 7 days are acceptable. Whole blood must be centrifuged, plasma removed and frozen, before sending for testing. EDTA plasma (purple or pink tube) samples are not acceptable.
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Shipping Information
CPT Codes Icon
CPT Codes
  • 85397
  • 85335 (if inhibitor is performed)
  • 83520 (if antibody is performed)
Method Icon
See Individual Tests
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Turnaround Time
Activity: 1-3 days; Inhibitor: 2-4 days; Antibody: 7 days
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New York State Approval
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DEX Z-Code™
Our Experts
Research investigators, postdoctoral fellows and laboratory staff at Versiti Blood Research Institute and Diagnostic Laboratories.
Hematology Testing
Versiti provides von Willebrand factor tests, aHUS diagnosis, hemophilia lab tests and other laboratory diagnosis of bleeding and clotting disorders.
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