<<Disclaimer: Verify this information before applying it to your situation.>> Note: I published Tanya Gerarduzzi's phone number, at University of Maryland, but please don't call her unless you have had blood drawn and are having it sent to her research project instead of going through Inova Diagnostics lab. Again, I don't know the charges of having the blood sample analyzed by Tanya at U of Maryland instead of having the lab use Inova. More information will follow, as soon as I have information from Inova and hopefully from Dr. Fasano via Tanya on doctors and labs for the tTG test. Again, the test requires being on gluten. If you are already diagnosed, and know you are Celiac, you don't need it, but you may have children or relatives you want tested with the tTG. Vicki