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What color tubes will you need for these tests?
- A. Red
- B. Gray
- C. Light blue
- D. Yellow
- E. Lavender
- F. Green
Correct Answer: D,E,F
Rationale: Blood cultures use yellow tubes, complete blood count uses lavender, electrolytes use green, and glucose uses gray (though red is sometimes used for chemistry tests, green is standard for electrolytes).
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The vein of choice for phlebotomy is
- A. The median cubital.
- B. The basilic.
- C. The cephalic.
- D. Any vein that is not tortuous.
Correct Answer: A
Rationale: The median cubital vein is preferred for phlebotomy due to its accessibility, size, and stability.
What action(s) will help to protect you from bloodborne pathogens during phlebotomy?
- A. Washing your hands prior to the procedure
- B. Washing your hands after the procedure
- C. Wearing gloves during the procedure
- D. Activating the needle safety device immediately after removing your gloves
Correct Answer: A,B,C
Rationale: Hand washing before and after the procedure and wearing gloves during it are standard precautions to protect against bloodborne pathogens. The needle safety device should be activated immediately after use, not after removing gloves.
Why is it important that you tell the patient exactly what you are about to do before you begin?
- A. To gain the patient's cooperation
- B. To delay the start of the task
- C. To reduce patient anxiety
- D. To demonstrate your knowledge
Correct Answer: A,C
Rationale: Informing the patient about the procedure helps gain their cooperation and reduces anxiety by setting clear expectations and building trust.
Which of the following statements is(are) true regarding the correct techniques for phlebotomy?
- A. The maximum length of time you may leave a tourniquet in place on the patient's arm is 3 minutes.
- B. The tourniquet should be applied 6 to 8 inches above the proposed puncture site.
- C. The labels should be applied to the tubes prior to filling them with blood.
- D. If the patient's skin is fragile, you should apply the tourniquet over the gown or shirt sleeve to prevent skin tears.
Correct Answer: C,D
Rationale: Labels should be applied before filling tubes to ensure accuracy, and applying a tourniquet over clothing protects fragile skin. The tourniquet should not be left on for more than 1 minute, and it is typically applied 3-4 inches above the site.
In what sequence will you draw the colored tubes?
- A. Yellow
- B. Lavender
- C. Green
- D. Gray
Correct Answer: A,B,C,D
Rationale: The order of draw is yellow (blood cultures) first to prevent contamination, followed by lavender (CBC), green (electrolytes), and gray (glucose) to minimize additive carryover.