# Phlebotomy Exam Prep 17, Butterfly (Winged) Collection Set

Page: https://stenobird.com/podcast/nursing-healthcare-exam-prep-7652377/phlebotomy-exam-prep-17-butterfly-winged-collection-set
Text version: https://stenobird.com/podcast/nursing-healthcare-exam-prep-7652377/phlebotomy-exam-prep-17-butterfly-winged-collection-set.md
Podcast: [Nursing & Healthcare Exam Prep](https://stenobird.com/podcast/nursing-healthcare-exam-prep-7652377)
Published: 2026-05-14T22:25:11+00:00
Episode link: https://open-exam-prep.com/
Audio file: https://episodes.captivate.fm/episode/fdcf633e-1329-48b7-a621-11198570808c.mp3
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Duration seconds: 190

## 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: - A butterfly (winged) set is the preferred device for patients with small, fragile, or difficult-to-access veins, such as in pediatric and geriatric draws. - A discard tube is mandatory before collecting a light blue top (coagulation) tube to purge the air from the set's tubing. - Failure to use a discard tube will cause the coagulation tube to underfill, altering the 9:1 blood-to-additive ratio and invalidating test results. - The risk of hemolysis increases if a syringe plunger is pulled back too forcefully, due to the pressure exerted on red blood cells passing through the small-gauge needle. - The typical needle gauge for a butterfly set is 23G, which results in a slower blood flow compared to a standard straight needle. 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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