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Ristocetin-Induced Platelet Aggregation (RIPA)

Order Code: 1068 Get Requisition Form
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Test Information
Aggregation with high and low dose ristocetin is used to identify patients with type 2B von Willebrand Disease, platelet-type von Willebrand Disease or Bernard-Soulier Syndrome. Citrated whole blood (light-blue top)
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Also Known As
  • Von Willebrand Disease
  • VWF
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Disease State
von Willebrand Disease
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Test Type
Functional/Serologic Test
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Requested Volume
4 tubes
Minimum / Pediatric Volume Icon
Minimum / Pediatric Volume
3 tubes
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Additional Sample Information
Contact laboratory for appointment. Test only available locally.
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Shipping Information
Room Temperature
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CPT Codes
  • 85576x2
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Turnaround Time
7 days
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New York State Approval
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DEX Z-Code™
Diagnostic Laboratories
Diagnostic laboratory services including HLA testing, donor testing, immunohematology reference lab testing, hematology testing and more.
Hematology Testing
Versiti provides von Willebrand factor tests, aHUS diagnosis, hemophilia lab tests and other laboratory diagnosis of bleeding and clotting disorders.
Our Experts
Research investigators, postdoctoral fellows and laboratory staff at Versiti Blood Research Institute and Diagnostic Laboratories.
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