Description
In-depth analysis of von Willebrand factor structure to assess bleeding disorders
The Von Willebrand Factor (VWF) Multimers test is a specialized blood test that analyzes the size and distribution of VWF protein multimers. These multimers play a crucial role in helping blood platelets stick together and form clots. This test is typically used to diagnose or classify subtypes of von Willebrand disease (VWD)—a common inherited bleeding disorder.
Why the VWF Multimers Test Is Important
While standard von Willebrand Factor tests measure how much VWF is present, the multimer analysis shows how the protein is structured—which is critical in understanding its function. Some types of VWD are not just due to low levels, but to abnormalities in the size or function of the multimers.
This test helps to:
- Differentiate between types of VWD, particularly type 2 variants (e.g., 2A, 2B, 2M, 2N)
- Evaluate abnormal bleeding patterns in patients with normal or borderline VWF levels
- Guide appropriate treatment strategies, especially before surgery or in women with heavy menstrual bleeding
- Monitor patients receiving VWF replacement therapy
Ideal For Individuals With:
- Easy bruising or prolonged bleeding after minor cuts
- Heavy menstrual bleeding
- Unexplained nosebleeds or gum bleeding
- Abnormal bleeding following surgery, dental work, or childbirth
- Family history of bleeding disorders
- Suspected von Willebrand disease with normal standard VWF tests
Specimen Type: Blood Draw
Fasting: Not required
