A Manual WBC Count Is Performed Using a System That

question 21

Multiple Choice

A manual WBC count is performed using a system that makes a 1:20 dilution of blood.When the cells in the four large corner mm² of the hemocytometer are counted,the following numbers of cells are obtained: 8,12,9,and 11.What would be the next step?

• A)Count the cells in all 9 mm² of the hemocytometer.
• B)Redo the dilution of blood using a new 1:20 dilution.
• C)Redo the dilution of blood using a 1:100 dilution.
• D)Calculate the count using the values from the 4 mm² and report the result.

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