CPT (Certified Phlebotomy Technician) Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for your Certified Phlebotomy Technician Test with a comprehensive quiz designed to enhance your knowledge and understanding. Use our engaging flashcards and multiple-choice questions that include hints and explanations to help you excel in your certification!

Start Multiple Choice Practice Test
Start Flash Cards

Practice this question and more.

What chemical additive is in a light blue tube?

  1. EDTA

  2. Citrate

  3. Heparin

  4. Silicone

The correct answer is: Citrate

The correct answer is B. Citrate. A light blue tube typically contains sodium citrate as an anticoagulant. This chemical additive is used to ensure that the blood does not clot during the testing process, making it suitable for tests that require plasma as a specimen. Options A, C, and D are incorrect: A. EDTA is commonly found in lavender and pink tubes, not light blue tubes. C. Heparin is typically used in green-top tubes or some tubes with a green additive, not light blue tubes. D. Silicone is used in some serum separator tubes (SST), which are usually gold or red-gray in color, but not in light blue tubes.

More Questions Like This