FREE NHA Phlebotomy Procedures and Order of Draw Questions and Answers

Question 1

A phlebotomist is preparing to draw blood for coagulation, chemistry, and hematology tests. Which of the following is the correct order of draw?

Accepted Answer

Light Blue, Green, Lavender

Answer

Lavender, Light Blue, Green

Answer

Green, Lavender, Light Blue

Answer

Red, Light Blue, Lavender

Question 2

What is the primary function of the additive EDTA found in a lavender-topped tube?

Accepted Answer

Bind calcium to prevent clotting

Answer

Promote clot formation

Answer

Inhibit glycolysis

Answer

Separate serum from cells

Question 3

When performing a routine venipuncture, which vein is typically the first choice for the phlebotomist?

Accepted Answer

Median cubital vein

Answer

Basilic vein

Answer

Cephalic vein

Answer

Femoral vein

Question 4

A patient develops a large, swollen, and bruised area around the venipuncture site. This complication is known as a:

Accepted Answer

Hematoma

Answer

Hemolysis

Answer

Phlebitis

Answer

Petechiae

Question 5

A gray-topped tube is primarily used for which type of laboratory test?

Accepted Answer

Glucose tolerance test

Answer

Coagulation studies

Answer

Complete blood count (CBC)

Answer

Blood cultures

Question 6

Which of the following best describes the primary reason for the established order of draw?

Accepted Answer

To prevent cross-contamination of additives

Answer

To ensure patient comfort

Answer

To organize tubes by color

Answer

To fill the largest tubes first