You will need a prescription for lab testing, but you can "shop" for pricing. I recently had a patient who has to pay out of pocket because of no insurance, so I called around to several labs and asked the prices. Quite a difference in how much they charge for tests and also the fee for drawing the blood varies. Some will give a discount if paid in cash instead of making payments. By doing this, I saved him about $35. I also found it interesting that when he had insurance, his co-pay cost as much as the lab fees cost without insurance. In his particular instance, LabCorp was his "preferred" for insurance and they were the most expensive of the one's I checked. You would need to know what particular tests are being run to ask price for each individual test. You can't just call up and ask "how much is a thyroid test"?, as there are specific tests for thyroid function. Do not try to self diagnose, go to your dr. for check up, then he can order the tests, however his/her office may have a "lab preference".