# Phlebotomy Exam Prep 32, Blood Cultures — Aseptic Technique

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Text version: https://stenobird.com/podcast/nursing-healthcare-exam-prep-7652377/phlebotomy-exam-prep-32-blood-cultures-aseptic-technique.md
Podcast: [Nursing & Healthcare Exam Prep](https://stenobird.com/podcast/nursing-healthcare-exam-prep-7652377)
Published: 2026-05-29T22:25:11+00:00
Episode link: https://open-exam-prep.com/
Audio file: https://episodes.captivate.fm/episode/cf0efe09-a8dd-472a-9ca4-938b4f23cfe9.mp3
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Duration seconds: 214

## 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: - The critical two-step skin antisepsis technique involving alcohol and chlorhexidine, emphasizing friction and complete air-drying. - Why two separate venipuncture sites are required for blood culture sets to differentiate between true infection and contamination. - The correct order of inoculation—aerobic bottle before the anaerobic bottle—and the scientific reason to prevent oxygen exposure. - The importance of collecting the correct blood volume, typically 8-10 mL per bottle for adults, to avoid false-negative results. - The industry standard for blood culture contamination rates (under 3%) and how this is tested as a quality control measure. 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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