Has anyone had Igenex testing done through Medicare?

I badly want my father to get an igenex test done but money isn't much of a resource for him, especially after my parents have gone broke helping me with medical fees after 7 years. He has medicare and igenex says they accept it but i want to verify which tests are definitely covered. I called Igenex and they said to ask his medicare provider so i called them and they couldn't give me any specific lab codes. I'm hesitant to check off the tests the doctor wants and have it come back with a several hundred dollar copayment