Phlebotomy Exam Prep 45, Specimen Rejection Criteria
Aug 12, 2026
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:
- Why a mislabeled specimen is a critical error that always requires recollection without exception.
- The importance of the nine-to-one blood-to-additive ratio in light blue top tubes and how underfilling falsely prolongs coagulation results.
- How hemolysis, the rupture of red blood cells, can falsely elevate analytes such as potassium, leading to inaccurate test results.
- The reason clotted EDTA (lavender top) tubes are rejected for hematology tests like the CBC and the importance of proper mixing to prevent it.
- The standard lab procedure following a specimen rejection, which involves notifying the provider and recollecting the sample to ensure patient safety and accurate diagnosis.
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
Show More Show Less 