Low Von Willebrand factor: what it means
A Von Willebrand factor result below the normal range is considered low. Here is what a reduced Von Willebrand factor can point to, and when it is worth discussing with a doctor.
Reference range: ~50–150% of normal; helps platelets stick to a wound and carries factor VIII — a low level causes von Willebrand disease (the commonest inherited bleeding disorder)
Understand your full resultWhat a low Von Willebrand factor can mean
- Von Willebrand disease — the main reason to test; a low or poorly working level causes a bleeding tendency.
- A low factor VIII alongside it — because von Willebrand factor carries factor VIII.
- Easy bruising, nosebleeds, heavy periods, prolonged bleeding after surgery or dental work — the clinical effects.
- A rare acquired form — associated with some other conditions.
When to discuss with a doctor
Von Willebrand factor is tested when a bleeding tendency is suspected — easy bruising, recurrent or prolonged nosebleeds, heavy menstrual periods, bleeding after dental work or surgery, or a family history of a bleeding disorder. Diagnosing von Willebrand disease usually needs the panel together (antigen, activity and factor VIII) and often a repeat, because inflammation, illness, pregnancy and stress raise the level and can mask a mild case. A confirmed deficiency is managed by haematology, with particular attention around surgery, dental procedures, childbirth and, for women, heavy periods; many people manage well with treatment only when needed. Mediora.AI can show von Willebrand factor with factor VIII, platelets and the clotting times so the bleeding-pattern is read together; the diagnosis and management belong with a haematologist.
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Upload your test - freeMediora.AI is informational - interpretation, not a diagnosis. A single out-of-range value is common and often benign; always discuss decisions with your doctor.