I do that for my elderly father too, and the doctors were able to diagnose a side effect of one of his drugs recently because I had all the information with me. My husband sent his blood sample in for testing some months back and there is still no word. We inquired, and they said they were updating their procedures with input from Dr. Stolle at the University of Pennsylvania and should have results for us within another month. That was six weeks ago. I was going to give her two months and then call again.
Some mutations are harder to find than others.
If they are learning the new approach from U Penn it will probably take longer than in the future. Meanwhile I know you are anxious to hear, so don't be shy to call and request an update. I understood that screening was to be annually. If someone has a history of VHL issues, but no evidence of tumor activity in their mid-40's, it might be okay to go more than one year between tests, but you should probably go every two years anyway. New things can pop up even at that age, though usually not as rapidly as in a teen-ager.