CPT (Certified Phlebotomy Technician) Practice Exam

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What is a pink (red) tube commonly used for?

Blood donation
Blood sugar testing
Blood typing
Chemistry tests

The correct answer is: Blood typing

The pink (or red) tube is primarily used for blood typing because it contains additives that help stabilize and preserve the components required for blood group testing. Blood typing is crucial for ensuring safe blood transfusions and determining a patient's blood group. Therefore, this tube is specially designed to facilitate accurate and reliable results in compatibility testing before any blood donation or transfusion procedure. In contrast, while blood donation is an essential procedure that may utilize various types of collection tubes, it is not specifically associated with the pink tube. Blood sugar testing occurs in tubes with different additives specifically designed for serum or plasma analysis, not typically in a pink tube. Chemistry tests also have their designated tubes, which contain specific gel or anticoagulants tailored for various biochemical assays.