@registerednursern.com: Order of Draw Phlebotomy Lab Tube Colors and Additives Nursing Venipuncture When performing lab draws, you must draw them in a specific order. This nursing study guide reference shows the most common lab tube colors, along with the additives they contain, the tests ordered, and the number of times you must invert the tube after collection. This could vary based on your protocols, so always verify this order with your facility. #nursing #nurse #fyp #learnontiktok #phlebotomy