You will have to check all the labs for the tests you want. I have found checking prices that one lab will have a high price on cholesterol tests, but lower cost on say thyroid. DirectLabs has monthly specials, SaveonLabs has Doctor designed packages, and RequestATest has panels like Mag.Zinc.Copper that would save over individual. Vitamin and mineral tests might be a bigger market and better priced at a lab that focuses on 'natural' health.
I’ve been surprised by the price ranges for same test, you'll have to check around.