NHA CCMA Exam Prep 80, Order of Draw Tube Colors and Additives

This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - The correct CLSI-aligned order of draw is Blood Cultures, Light Blue, Serum (Red/Gold), Green, Lavender/Pink, and Gray. - Additive cross-contamination is the primary reason for the specific draw order, and exam questions often test the consequences of an incorrect sequence. - EDTA from lavender tubes can falsely decrease calcium and increase potassium levels if it contaminates a serum or heparin tube drawn after it. - Light blue (sodium citrate) tubes for coagulation studies require a full draw to maintain the critical 9:1 blood-to-additive ratio; underfilled tubes lead to inaccurate results. - Gray top tubes contain sodium fluoride, a glycolytic inhibitor, which is essential for preventing the breakdown of glucose in samples for testing. For more free exam prep tools, practice questions, and AI-powered explanations, visit https://open-exam-prep.com/ or YouTube Channel: https://www.youtube.com/@Open-exam-prep