Section 26 - Tubes/Additives/Order Of The Draw

Question 1

What is the difference between serum and plasma?

Answer 1

-clotting factors because of anticoagulant
-plasma is the liquid portion of unclotted blood and still contains the clotting factors
-serum is the liquid portion of blood that has been allowed to clot (clotting factors are no longer present, they’ve been used to clot the blood)

Question 2

List 3 tubes that have an anticoagulant?

Answer 2

-Lavender
-Green (mint or dark)
-Pink
-Royal blue with a light blue stripe
-Light blue
-Gray

Question 3

What was the CLSI formerly called?

Answer 3

Clinical Laboratory Standards Institute (NCCLS)

Question 4

What is the most common cause of BCX/Blood culture contamination?

Answer 4

Improper site preparation

Question 5

Why is it important to follow the order of the draw?

Answer 5

To avoid cross contamination; lead to erroneous results