Hematocrit Determination Quiz

What is another term for hematocrit?

Packed cell volume (PCV)

In which unit is hematocrit reported?

Percent (%)

What is the main advantage of hematocrit determination over RBC count?

More useful in detecting cases of anemia

Which of the following materials is NOT used in the Adam's microhematocrit method?

Microhematocrit reader Signup and view all the answers

What is the purpose of sealing one end of the capillary tube with sealing clay in the microhematocrit method?

To prevent blood spillage Signup and view all the answers

At what speed is the blood centrifuged in the microhematocrit method?

10,000 rpm Signup and view all the answers

When is a heparinized (red) capillary tube used in the Adam's microhematocrit method?

If the blood is from a skin puncture Signup and view all the answers

What is the volume of blood filled in the capillary tube in the Adam's microhematocrit method?

Around 3/4 of the capillary tube Signup and view all the answers

Which of the following is an objective of hematocrit determination?

Correlate hematocrit levels with diseases Signup and view all the answers

What can be computed manually from the values of RBC count, hemoglobin level, and hematocrit level?

Red blood cell indices Signup and view all the answers

What is the alternative name for cell volume percent (CV%)?

Volume percent (vol%) Signup and view all the answers

Which of the following is a material used in the Adam's microhematocrit method?

Microhematocrit centrifuge Signup and view all the answers

What is the purpose of preparing a blood smear in the laboratory?

To create a thin, monolayer of cells for microscopic examination Signup and view all the answers

What is the ideal thickness of a blood smear, and how is it achieved?

The ideal thickness is achieved by spreading the blood evenly to create a monolayer Signup and view all the answers

What are the common errors of artifacts that can occur during blood smear preparation, and how can they be minimized or corrected?

Common errors include uneven spreading and overlapping cells; they can be minimized by practicing proper technique Signup and view all the answers

How does the choice of anticoagulant affect the quality of a blood smear, and why is this important to consider?

The choice of anticoagulant can affect cell morphology and staining quality; it is important for accurate microscopic examination Signup and view all the answers

Describe the quality control measures that should be in place to ensure the accuracy and consistency of blood smear preparation.

Regular calibration of equipment and standardization of procedures Signup and view all the answers

What is the most appropriate specimen for smear preparation?

Anticoagulated blood Signup and view all the answers

Which method of smear preparation employs one slide for the smear and another slide as the spreader?

Two-slide or Wedge method Signup and view all the answers

What angle should the spreader slide be positioned at in the Two-slide or Wedge method?

About 30°-45° Signup and view all the answers

What is a characteristic of a good smear?

It must have a smooth and an even surface, free from ridges, waves, or holes. Signup and view all the answers

What is the name of the method that utilizes two cover glasses for smear preparation?

Two-Cover Slip or Ehrlich's Two-Coverglass Method Signup and view all the answers

What is the main advantage of the Two-Cover Slip method over the Two-slide method?

It allows for a thinner and more uniform smear Signup and view all the answers

What should be the coverage of the smear on the slide according to the criteria of a good smear?

⅔ or ¾ of the slide Signup and view all the answers

What is the purpose of using anticoagulated blood for smear preparation?

To prevent blood from clotting Signup and view all the answers

What is the main objective of smear preparation?

To execute the proper way of preparing blood smears Signup and view all the answers

What is the characteristic of a good smear according to the criteria?

It must have a feathery edge Signup and view all the answers

What is the most popular method of smear preparation?