Hello everyone. I am new to this forum. I live in Canada and was told by a doctor here that I have Lyme, Bartonella, Babesia, Cytomegalovirus and a few other things but that was a clinical diagnosis and doctors in Canada cannot without risk of losing their licenses treat chronic Lyme. I went to a doctor in New York who has treated Lyme disease for over 25 years. He ordered some tests-one of them is the C4A test. I went to a lab here in Canada yesterday and they had never heard of it. Is there anyone posting here from Ontario,Canada who knows where one can get this test done. Is this test diagnostic for Lyme?