Von Hippel Lindau is diagnosed by a genetic test specifically looking for VHL. This test, usually taken via blood sample, is typically taken when a patient shows two or more signs of VHL or has a family member diagnosed with VHL. Depending on the symptoms, doctor needs can vary. For a child, a pediatrician, pediatric oncologist, pediatric Gastroenterologist, and pediatric ophthalmologist usually team to form a treatment plan, with adults, similar doctors are needed. Upon diagnosis, brain and abdominal MRI's, angiocardiograms of suspected tumors, hearing, vision, and basic neural tests are usually done to assess tumor growth.