discard volume

Medical term Special Collections

Blood first withdrawn from a vascular access line and set aside, so flush solution does not dilute or contaminate the specimen; the volume follows policy.

Sources

• WHO Guidelines on Drawing Blood: Best Practices in Phlebotomy (2010); official WHO IRIS PDF, also published as NCBI Bookshelf NBK138650 · World Health Organization
• Lalthanthuami HT, Kumari MJ, Venkateswaran R, Lakshmi PR, Ramamoorthy L. Performance of 3 mL versus 5 mL Discarded Volume for Blood Sampling from Central Venous Access Device. J Lab Physicians 2021 · PubMed Central (NLM)

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