
NHA CCMA Exam Prep 80, Order of Draw Tube Colors and Additives
Published: October 24, 2026
Duration: 3:36
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 a...