No, you don't need insurance for your lab test. Your lab slip contains all the information the lab provider needs.
Please have a valid photo ID ready, whether you're visiting a lab location or having a mobile appointment with a phlebotomist.
For everything else you need to know before your test, check out our article Preparing for your blood draw (Fasting, exercise, medication/supplement) for details on fasting, exercise, and medication or supplement guidelines..