Insurance will cover most lab work. Ask your docotor. My doc does whatever I ask and I can see her wheels clicking as she tries to think of IDC codes to justify it.....which she is very good at.
Some people here get their lab work done through Life Extension Foundation. Perhaps someone else can give the details on that. No prescription necessary.
I get a CBC, B12, Vit D, thyroid panel, estrogen an progesterone, testosterone, DHEA, folate, and cholesterol and triglycerides about every 3rd year as they are too good to merit checking frequently.
Please be advised
I advocate all health blogs linked to NMT.
Read them and explore MMS and CS.
It may be the best chance that you have to heal yourself
of long term and chronic illness.