American Medical Certification Association (AMCA) Phlebotomy Practice Exam

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What does an SST tube stand for?

Serum Separator Tube

An SST tube stands for Serum Separator Tube. This type of tube is specifically designed to separate serum from blood cells after the sample has been centrifuged. The interior of an SST tube is coated with a gel that forms a barrier between the serum and the cellular components during centrifugation. This allows for the easy collection of serum for various laboratory tests without the need for multiple transfers, reducing the risk of contamination and error.

Understanding the purpose of SST tubes is essential for phlebotomists, as they are commonly used for many routine tests, including hormone levels, metabolic panels, and drug testing. The name "Serum Separator Tube" directly reflects its primary function and composition, distinguishing it from other types of blood collection tubes that may be used for different tests or specimens.

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Standard Serology Tube

Simple Separation Test Tube

Sodium Serum Tube

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