WBC Differential: Test Your Understanding
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What does a white blood cell (WBC) differential show?
a
The size of red blood cells
.
b
The different types of white blood cells and their proportions
A WBC differential breaks the total white blood cell count into different cell types, such as neutrophils and lymphocytes.
c
How well blood clots
d
How much iron is stored in the body
Which white blood cell type is most often increased during bacterial infections?
a
Lymphocytes
b
Eosinophils
c
Basophils
d
Neutrophils
Neutrophils are the most common white blood cells and often increase during bacterial infections or inflammation.
Which white blood cell type is commonly associated with viral infections?
a
Neutrophils
b
Lymphocytes
Lymphocytes often increase during viral infections, although patterns can vary.
c
Basophils
d
Platelets
If one part of the WBC differential is slightly outside the normal range, what does that usually mean?
a
There is always a serious disease
b
The result is meaningless
c
It must be interpreted in context with symptoms and other labs
Small changes are common and often temporary. Doctors look at the overall pattern, trends, and clinical context.
d
Treatment is always needed immediately
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