This is a difficult question to answer because there appears to be no specific age at which these tests should be done.It is important to know about both conditions so I would think that at 2 to 3 years it would be worthwhile. It would be best to consult a paediatric haematologist about the tests for Von Willebrand's disease. When the blood tests are done for this condition blood should also be sent to the laboratory for lipograms and cholesterol.
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