EPISODE · Jun 11, 2026 · 3 MIN
Phlebotomy Exam Prep 45, Specimen Rejection Criteria
from Nursing & Healthcare Exam Prep
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
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Phlebotomy Exam Prep 45, Specimen Rejection Criteria
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