I have a question: In my externship I preformed the tubes that were called out from the labs computer system. It was my job to do the draw and collect the blood in the correct order of draw. But I have an interview at a lab next week and I was wondering if I need to know the tests ordered by the doctor and match it up with the correct tube color. For instance if the doctor requests a LIPID Panel-Fasting, how do I know what color tube to use, and will I be asked to identify the correct color of tube for a particular test? If that is the case where on the web can I find a guide for tube color and corresponding tests?