label: Impaired von Willebrand factor collagen binding activity
label_lc: impaired von willebrand factor collagen binding activity
description: "Reduced ability of von Willebrand factor (vWF) to bind collagen. Abnormal response to collagen as manifested by reduced or lacking ability of plasma von WIllebrand Factor to bind collagen. An ELISA-based assay is typically used; the test is sensitive to loss of von Willebrand Factor high molecular weight multimers."