1 – Programme overview

This external quality assessment programme evaluates the accuracy of D-Dimer and von Willebrand Factor assays. The main commercial assay techniques are represented..

Statistical reports are sent with supporting comments from the expert clinical biologists who coordinate the programme.

Participants can test all analytes, or only those they are interested in..

2 – Assessment frequency

Number of surveys per year: 4
Number of control samples per survey: 2
Number of samples per year: 8

3 – List of analytes assessed 

• D-dimer
• von Willebrand Factor – Antigen
• von Willebrand Factor – Activity

4 – Description of the control samples

Lyophilised human control plasma (citrate) (samples to be resuspended in 1 mL of distilled water).