Bleeding disorder coagulation disorder
Conditions
Interventions
None listed
Sponsors
Universitair Medisch Centrum Utrecht
Eligibility
Age
18 Years to 99 Years
Inclusion criteria
Inclusion criteria: - Age: 18 years or older - Previously confirmed Von Willebrand Disease, diagnosed in accordance with SSC-ISTH guidelines - Willing and be able to understand the study information and sign the informed consent form
Exclusion criteria
Exclusion criteria: - Documented history of persisting severe anaemia (defined as haemoglobin
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Performance is the primary objective of this study and is defined as the ability of the in vitro diagnostic micro-assay to measure von Willebrand factor induced platelet aggregation in accordance with the golden standard diagnostic method, risto-cofactor activity (VWF:RCo). A correlation coefficient between the micro-assay and risto-cofactor activity outcome of >=0.75 in all samples is considered acceptable. | — |
Secondary
| Measure | Time frame |
|---|---|
| Secondary performance endpoints include specificity and sensitivity of the micro-assay. Results should be within the confidence intervals of the golden standard, risto-cofactor activity (VWF:RCo). | — |
Countries
Netherlands
Outcome results
None listed