I just order them myself every year at LabCorp. https://www.ondemand.labcorp.com/products
I definitely prefer doing the testing myself instead of begging the doctor to order things.
About the only time I go to doctors is to beg for antibiotics- which they often refuse to give me. They say, "oh, it's probably a virus." Okay, but all of the virus tests I can find came back negative. I have a CBC showing elevated WBC. Coughing up yellow-green slime. Can you order a sputum culture for me? "no, come back if you are still sick after 10 days". Great, $200 and 30 minutes in the waiting room getting exposed to other sickos for nothing, miss another week of work. The gatekeeping of medical care infuriates me. I have plenty of money, let me use it to get better faster.