CPT (Certified Phlebotomy Technician) Practice Exam

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Prepare effectively for the CPT (Certified Phlebotomy Technician) exam with our comprehensive quiz featuring multiple-choice questions, flashcards, and in-depth explanations. Enhance your knowledge and boost your confidence to ace the certification test!

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For a LIGHT GREEN tube, what test is typically run, which anticoagulant is used, and to which lab section is it sent?

  1. Blood typing, potassium oxalate, blood bank

  2. Cardiac, lithium heparin, chemistry

  3. PK, sodium heparin, chemistry

  4. CBC, EDTA, hematology

The correct answer is: Cardiac, lithium heparin, chemistry

The choice of the light green tube is typically associated with the use of lithium heparin as the anticoagulant. This tube is used primarily for tests related to the chemistry section of the laboratory, particularly for cardiac-related assays such as troponin and other cardiac markers. Lithium heparin prevents clotting, making it suitable for tests that require plasma. In the laboratory environment, samples collected in light green tubes can be sent directly to the chemistry lab, aligning with the types of tests performed on plasma. This information is crucial for understanding the correct application of various blood collection tubes in phlebotomy and laboratory processes.

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