Of course your physician could order the test on his/her prescription paper, yet a diagnosis code should be written down if you want to use your medical insurance for full or partial payment of the test. If you choose to use your health insurance then you should fax the test order from your physician (with diagnosis code), your insurance identification card, and a copy of your ID to us. We will send these information along with your collected sample to the laboratory so they can charge your health insurance carrier.