Vascular Ehlers-Dan: If by veds you mean vascular ehlers-danlos syndrome, it is unlikely that a biopsy would be negative. Genetic testing exists to confirm a suspected diagnosis if the first biopsies were all negative and the index of suspicion is still very high.
Answered 3/3/2012
6.1k views
98% DNA: Mutations sequencings are positive but there are other methods to detect the other 2%.
Answered 9/13/2013
4.9k views
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