Are you thinking of going through LabCorp or Quest, or something like IGeneX?
For me, my doctors chose, and I had a positive test through LabCorp, so that was easy and inexpensive. But now I'm trying to decide for my daughter and I'm not sure what to do. We did all the other tests we could think of, along with Lyme (twice) and Babesia through LabCorp, and everything was negative. (Her symptoms were flaring at the time of the test.) Going to try IGeneX next. I think she may have babesia based on symptoms, so I definitely want to include that, but I think I'm going to just see what the LLMD recommends when we see her in a few weeks.
"This too shall pass. It might pass like a kidney stone, but it will pass."