|EQA 2023 - D-Dimers/von Willebrand factor (HMDD)|
Expert Biologists - Scheme Coordinators:
Chantal BON and Roland MELEY
EQA performed since 2000
Number of participating laboratories in 2022: 614
1 – Scheme overview
This external quality assessment scheme assesses the accuracy of D-Dimer and Von Willebrand Factor determination. The scheme covers the main techniques available on the market.
Statistical reports are sent with supporting comments from the expert clinical biologists who coordinate the scheme.
Participating labs can choose to be assessed for all the analytes of this scheme, or simply a subset of analytes of interest.
2 – Assessment frequency
Number of investigations per year: 4
Number of control samples per investigation: 3
Number of samples per year : 12
4 concentration levels are assessed for D-Dimers and 2 levels are assessed for Von Willebrand Factor (Activity and Antigen).
3 – List of analytes assessed
4 – Description of the control samples
Lyophilized human control plasma (citrate) (samples to be resuspended in 1 mL of distilled water).