@88lance, I would like to add my welcome to Connect along with @amandajro and others. My primary care is part of the Mayo Health Systems and my doctor would order tests prior to a referral to the Rochester Mayo Clinic which would be seen by specialist. I've also had to have additional tests done after being referred to the main clinic. It's been my experience that the doctors work as a team with other doctors and sometimes additional tests are needed as part of the diagnosis and treatment. I'm sure they will take tests you've had done into consideration unless it's something that really needs to be done. I also think it would be helpful to discuss your concerns about the tests you've already had when you have your appointment.