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vW Factor Assay

vW FACTOR ASSAY®   Ristocetin CoFactor

Catalog No.  103025

vW Factor Assay® (Ristocetin CoFactor) Kit is a system of reagents and control plasmas that causes lyophilized platelets to agglutinate in the presence of patient Platelet Poor Plasma and Ristocetin for evaluation of von Willebrand Syndrome.

  • Tests Patient Samples for Ristocetin CoFactor Activity

  • Offers a Three or Four Point Standard Curve

  • Achieves Linear Standard Curves

  • Replaces Lab Developed Tests for Regulatory Compliance

  • Shows Inflammatory Responses

  • Includes Lot Specific Assay Value Sheet

  • Use with Most Light Transmission Aggregometers

  • Plasmas Traceable to WHO Standard Reference Plasma

  • Suitable for Veterinary Use

PRODUCT DETAILS

Ristocetin CoFactor is the in vitro activity of the von Willebrand factor which is responsible for the agglutination of platelets in the presence of Ristocetin.  Decreased von Willebrand factor is associated with von Willebrand syndrome, thus making quantitation of ristocetin cofactor activity most valuable in the diagnosis and evaluation of this coagulopathy. Levels of ristocetin cofactor activity are determined by the ability of a test plasma and ristocetin to induce agglutination of a standardized platelet suspension

The 20 Determination Complete Test Kit Includes:  Lyophilized Platelets (2 x 4.0mL), Ristocetin Reagent (2 x 0.5mL),    vW Normal Reference Plasma (2 x 0.5mL), vW Abnormal Control Plasma (2 x 0.5mL), Tris Buffered Saline (2 x 10mL), and Graph Paper (2 Each).

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