# Phlebotomy Exam Prep 57, Pre-Analytical Errors — The 60% Problem

Page: https://stenobird.com/podcast/nursing-healthcare-exam-prep-7652377/phlebotomy-exam-prep-57-pre-analytical-errors-the-60-problem
Text version: https://stenobird.com/podcast/nursing-healthcare-exam-prep-7652377/phlebotomy-exam-prep-57-pre-analytical-errors-the-60-problem.md
Podcast: [Nursing & Healthcare Exam Prep](https://stenobird.com/podcast/nursing-healthcare-exam-prep-7652377)
Published: 2026-06-23T22:25:11+00:00
Episode link: https://open-exam-prep.com/
Audio file: https://episodes.captivate.fm/episode/7430981e-8017-4710-90e0-af1cd6ffd31f.mp3
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Duration seconds: 202

## Resource

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: - Pre-analytical errors, which occur before lab testing, account for up to 70% of all lab mistakes and are a major focus on the Phlebotomy exam. - Improper patient identification is the most critical pre-analytical error; exam questions will test your ability to follow strict ID protocols without exception. - Hemolysis, the rupture of red blood cells often caused by incorrect collection technique, can falsely elevate analytes like potassium. - Violating the correct order of draw can lead to additive cross-contamination, causing dangerously inaccurate results, such as falsely lowered calcium levels. - Prolonged tourniquet application beyond one minute causes hemoconcentration, and drawing from an arm with an IV requires specific procedures to avoid sample contamination. 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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## Transcript

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