Lyophilized Platelets represent a standardized and fixed human platelet suspension, integral to the Ristocetin CoFactor Assay Activity Test. Crafted with precision, this solution features a standardized formalin-fixed human platelet suspension that preserves the crucial Gp1b receptor function. Tailored specifically for the Ristocetin CoFactor Activity Assay, it serves as a key indicator for vWF inhibition in mixed patient and pooled plasma samples.

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Beyond its clinical applications, this versatile formulation extends its utility to veterinary use, demonstrating adaptability across diverse medical fields. The inclusive test kit comprises 1 x 10.0 mL Lyophilized Platelets and 1 x 10.0 mL Tris Buffered Saline, presenting a comprehensive set of components essential for precise and reliable testing.

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At the heart of the assay lies the Ristocetin CoFactor, representing the in vitro activity of the von Willebrand Factor (VIII:VWF). This factor orchestrates platelet agglutination in the presence of Ristocetin. The quantitation of Ristocetin CoFactor Activity plays a pivotal role in diagnosing and evaluating von Willebrand Syndrome, with decreased activity serving as a hallmark indicator. The assay precisely measures Ristocetin CoFactor Activity levels by assessing the ability of a test plasma and Ristocetin to induce agglutination in a standardized platelet suspension.

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