Peripheral Blood Smear Quiz Questions And Answers

2.

The most preferred specimen for blood smear is

Arterial blood gas
Capillary blood
Heparin anti-coagulated venous blood
Blood culture specimen

Correct Answer

A. Capillary blood

Explanation

Capillary blood is the most preferred specimen for blood smear because it is easily accessible, requires minimal patient discomfort, and provides a representative sample of the patient's blood. Capillary blood is obtained by pricking the fingertip or earlobe, and it contains a mixture of arterial and venous blood. This specimen is commonly used for point-of-care testing, such as glucose monitoring, and it is suitable for microscopic examination to assess blood cell morphology and other parameters. Additionally, capillary blood smears are often used in pediatric patients or individuals with difficult venous access.

Rate this question:

8

3.

Wrights stain procedure in which smear is placed on a staining rack and flooded with wright's stain, after which an equal volume of buffer is added dropwise

Quick stain
Two step-method
Both A & B
None

Correct Answer

A. Two step-method

Explanation

The given procedure describes a two-step method for the Wright's stain procedure. In this method, the smear is placed on a staining rack and flooded with Wright's stain. Then, an equal volume of buffer is added dropwise. This two-step process ensures proper staining of the smear and helps in achieving accurate and reliable results. Therefore, the correct answer is the two-step method.

Rate this question:

3

4.

Using a two slide (wedge) method of preparing a peripheral blood smear, the end of the spreader slide is brought to rest at a ________________ angle in front of the drop of blood.

10-15 degrees
30-35 degrees
50-55 degrees
70-75 degrees

Correct Answer

A. 10-15 degrees

Explanation

The end of the spreader slide is brought to rest at a 10-15 degree angle in front of the drop of blood when using a two slide (wedge) method of preparing a peripheral blood smear. This angle allows for an optimal spread of the blood sample on the slide, ensuring that the cells are evenly distributed and well visualized under the microscope. A steeper angle may cause the blood to spread too thin, while a shallower angle may result in clumping of the cells.

Rate this question:

1

5.

The two types of automatic stainers are

A moving belt that carries slides through the staining reagent
Basket or batch type in which baskets of slides are taken through the staining process
Dancng cup
Moving shoe method

Correct Answer

A. A moving belt that carries slides through the staining reagent

Explanation

The correct answer is A moving belt that carries slides through the staining reagent. This answer accurately describes one of the two types of automatic stainers, which involves a moving belt that carries slides through the staining reagent. This method allows for a continuous and automated staining process, ensuring consistent and efficient staining of slides.

Rate this question:

5

6.

Two commonly use hematology blood stains are

Wright's stain
Giemsa Stain
Koh
All

Correct Answer(s)

A. Wright's stain
A. Giemsa Stain

Explanation

Wright's stain and Giemsa stain are both commonly used hematology blood stains. Wright's stain is a combination of eosin and methylene blue, which allows for the differentiation of various blood cells. It stains the cytoplasm of cells pink or orange, and the nuclei blue or purple. Giemsa stain, on the other hand, is a mixture of eosin and methylene blue with additional components. It is used to stain blood smears for the identification of blood cells and parasites. Both stains are important tools in hematology for the examination and analysis of blood samples.

Rate this question:

4

7.

Requirements for storing Blood smears

Dust-free
Dark
Protected away for moisture
Stored in a wet box

Correct Answer(s)

A. Dust-free
A. Dark
A. Protected away for moisture

Explanation

Blood smears need to be stored in a dust-free environment to prevent any contaminants from affecting the samples. Storing them in a dark place is necessary to protect the samples from light exposure, which can cause degradation. Additionally, keeping the smears protected away from moisture is crucial to prevent any potential damage or alteration to the samples. Storing them in a wet box is not recommended as it can introduce excess moisture, which can negatively impact the integrity of the blood smears.

Rate this question:

5

8.

A properly stained smear should appear

Pinkish-blue to the naked eye
Yellowish-green
Reddish-brown
Black

Correct Answer

A. Pinkish-blue to the naked eye

Explanation

A properly stained smear should appear pinkish-blue to the naked eye because staining is a technique used in microscopy to enhance the visibility of cells or structures. Different stains can be used to highlight specific components of the sample. In this case, the pinkish-blue color indicates that the stain used successfully highlighted the desired structures or cells in the smear, allowing for better observation and analysis.

Rate this question:

3

9.

All smears from anticoagulated EDTA blood should be made within_______ hours of blood collection.

1
2
3
4

Correct Answer

A. 2

Explanation

Smears from anticoagulated EDTA blood should be made within 2 hours of blood collection. This is because EDTA is an anticoagulant that prevents blood from clotting, but it can also cause changes in the blood cells over time. Making the smears within 2 hours ensures that the blood cells are still in their original state and provides accurate results for microscopic examination. Waiting longer than 2 hours may lead to distortion or degradation of the blood cells, compromising the quality of the smear.

Rate this question:

3

10.

Features of a good blood smear

The smear should cover about three-fourths of the slide.
The smear should show a gradual transition from thick to thin.
It should have a smooth appearance
A feathered edge (about 1.5 cm long)
The smear should have no holes or ridges
Microscopically, the cells should be evenly distributed
Microscopically. there should be an area at the tin end of the smear where RBCs are not overlapping.
The smear should look black
There show to be a transition of thin to thick to thin on the slide.

Correct Answer(s)

A. The smear should cover about three-fourths of the slide.
A. The smear should show a gradual transition from thick to thin.
A. It should have a smooth appearance
A. A feathered edge (about 1.5 cm long)
A. The smear should have no holes or ridges
A. Microscopically, the cells should be evenly distributed
A. Microscopically. there should be an area at the tin end of the smear where RBCs are not overlapping.

Explanation

A good blood smear should cover a significant portion of the slide, about three-fourths, to ensure an adequate sample for examination. The smear should also demonstrate a gradual transition from thick to thin, indicating proper spreading of the blood cells. A smooth appearance without any holes or ridges is important to prevent artifacts that may interfere with accurate analysis. A feathered edge of about 1.5 cm in length helps to create a thin and even distribution of cells. Microscopically, the cells should be evenly distributed, allowing for a thorough examination of their morphology. Additionally, there should be an area at the thin end of the smear where red blood cells are not overlapping, ensuring clear visibility. The smear should appear black, indicating proper staining and contrast.

Rate this question:

3

11.

All smears should be stained within __________________ hour of being pepared

1
2
3
4

Correct Answer

A. 1

Explanation

All smears should be stained within 1 hour of being prepared because smears are delicate and can deteriorate over time. Staining the smears within 1 hour ensures that the cells are preserved and the staining process accurately reflects the characteristics of the cells. If the smears are stained after 1 hour, the cells may degrade or become distorted, leading to inaccurate results. Therefore, it is crucial to stain the smears promptly to obtain reliable and valid information from the staining procedure.

Rate this question:

2

Peripheral Blood Smear Quiz Questions And Answers

If a dried smear cannot be stained immediately, it should be preserved by immersing in

Quiz Preview

The most preferred specimen for blood smear is

Wrights stain procedure in which smear is placed on a staining rack and flooded with wright's stain, after which an equal volume of buffer is added dropwise

Using a two slide (wedge) method of preparing a peripheral blood smear, the end of the spreader slide is brought to rest at a ________________ angle in front of the drop of blood.

The two types of automatic stainers are

Two commonly use hematology blood stains are

Requirements for storing Blood smears

A properly stained smear should appear

All smears from anticoagulated EDTA blood should be made within_______ hours of blood collection.

Features of a good blood smear

All smears should be stained within __________________ hour of being pepared