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CPT (Certified Phlebotomy Technician) Practice Exam

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What does SST stand for?
Correct Answer:
Serum Separator Tube
Explanation:
The correct answer is "Serum Separator Tube," as SST is commonly used to refer to a type of tube used in laboratory settings designed for collecting blood samples. This tube contains a gel that separates the serum from the blood cells upon centrifugation, allowing for the serum to be easily harvested for various tests without contamination from cellular components. This ensures that the serum used for testing is clean and that the results are accurate, as it minimizes interference from the cellular elements. The other options do not accurately describe the purpose or composition of the SST. Using terminology associated with sodium or other specific tests does not reflect the standard name and function of this type of tube in phlebotomy practice.

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