Chapter 3: Blood Specimens

Question 1

What are the largest volume of specimes that come to the laboratory for testing?

Answer 1

Venous blood specimens collected using a venipuncture method to draw blood from a vein.

Question 2

Where is capillary blood found?

Answer 2

Under the surface of the skin.

Question 3

Finger and heel sticks are examples of?

Answer 3

Capillary blood collection.

Question 4

Capillary blood from fingers sticks is typically used in testing methods like?

Answer 4

Glucose meters that need only a few drops of blood.

Question 5

What is the most common way to draw newborns’s blood for use in screening tests?

Answer 5

Heel sticks.

Question 6

Arterial blood in adults is the usually collected from the the arteries in?

Answer 6

The wrist using a needle and syringe.

Question 7

Why a needle and a syringe is used to collect arterial blood?

Answer 7

Because arteries are not visible from the surface of the skin.

Question 8

Arterial samples are usually obtain to?

Answer 8

Test the blood’s oxygen and carbon dioxide levels (that help to determine lung function).