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MODULE 2 – COLLECTION TUBES & ORDER OF DRAW
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In this module, you will focus on blood collection tubes, additives, and the correct Order of Draw. You will learn: • The color-coded tube system
• Additives found inside each tube and their purpose
• Which tubes go to specific laboratory departments
• Proper tube inversion and mixing techniques
• The CLSI Order of Draw and why it prevents cross-contamination
• Common tests associated with each tube. Understanding tubes is critical to preventing specimen rejection and ensuring accurate test results. Many national certification exam questions test your knowledge of additives, departments, and order of draw. Master this section carefully. Tube errors are one of the most common pre-analytical mistakes in healthcare.