Activity 4: Determining the Hemocrit

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1

When is the hematocrit routinely determined?

When anemia is suspected

2

How is the hematocrit obtained?

By centrifuging

3

1. Describe the makeup of the 3 layers of a hematocrit (from top to bottom).

2. Which 2 layers make up the formed elements?

1.3 layers

Top: Plasma

Middle: Leukocytes/WBCs and platelets

Bottom: Erythrocytes/RBCs

2. Middle and bottom layers

4

1. The hematocrit is generally considered equivalent to the volume of what formed element?

2. Why is that?

3. What is the only value reported for the hematocrit?

1. Considered equal to the volume of RBCs

2. The blood cell population is primarily RBCs

3. The RBC volume

5

What are the normal hematocrit values for males and females respectively?

Males: 47.0 plus/minus 5

Females: 42.0 plus/minus 5