" /> von Willebrand factor.collagen binding activity/von Willebrand factor Ag:Ratio:Pt:PPP:Qn:IA - CISMeF





Preferred Label : von Willebrand factor.collagen binding activity/von Willebrand factor Ag:Ratio:Pt:PPP:Qn:IA;

LOINC status : ACTIVE;

LOINC display name : vWf.collagen binding activity/vWf Ag IA (PPP) [Ratio];

LOINC long common name : von Willebrand factor (vWf).collagen binding activity/von Willebrand factor Ag [Ratio] in Platelet poor plasma by Immunoassay;

LOINC short name : vWF CBA/vWF Ag PPP IA-Rto;

LOINC description : This term represents a ratio of two results that are expressed as percentages of normal: the von Willebrand factor.collagen binding activity and the von Willebrand factor antigen concentration, both of which are reported as actual/Normal. The von Willebrand factor (vWF) collagen binding activity to antigen ratio can help distinguish different types of von Willebrand disease (VWD). VWD types 1 and 3 are usually associated with a quantitative decrease in vWF, which would affect both the vWF collagen binding activity as well as vWF antigen concentration, while type 2 is associated with a functional defect in VWF, which would affect the activity but not the amount of antigen present. Therefore, patients with type 2 VWD are likely to have a lower vWF collagen binding activity to antigen ratio (less than 0.5) compared to patients with types 1 or 3 VWD.;

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28/05/2025


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