American Medical Certification Association (AMCA) Phlebotomy Practice Exam

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Which tube is required for a hepatic panel test?

Blue Tube Top
Red Tube Top
Green Tube Top
Gray Tube Top

The correct answer is: Red Tube Top

The correct answer is the red tube top, which is typically used for a hepatic panel test. The hepatic panel, which evaluates liver function and health, often requires serum for analysis. Red top tubes contain no additives, allowing the blood to clot and facilitating the collection of serum after centrifugation. This is essential for many tests, including those in the hepatic panel, which measures various enzymes and substances in the blood related to liver function. The other tube types are not suitable for this test due to their specific roles. Blue tube tops contain sodium citrate, which is used for coagulation studies. Green tube tops have heparin, which is an anticoagulant that prevents clotting and is more appropriate for tests requiring plasma. Gray tube tops typically contain additives like sodium fluoride, used for glucose and lactate testing. Each tube type serves a distinct purpose in phlebotomy, which is why knowing the correct choice is crucial for accurate testing and diagnosis.