When the Electronic Impedance Principle Is Used to Count Blood

question 8

Multiple Choice

When the electronic impedance principle is used to count blood cells,what is done to increase platelet-counting sensitivity?

• A)Decrease the size of the RBC/platelet aperture.
• B)Increase the size of the RBC/platelet aperture.
• C)Use a strong lysing agent to selectively lyse the RBCs.
• D)Lower the upper threshold for counting platelets so that even microcytic red cells are excluded.

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Definitions:

Variable Overhead

Indirect operating costs that vary with the level of production activity, such as utilities and materials.

Direct Labor

The wages or salaries paid to employees who are directly involved in producing goods or services.

Direct Materials

The raw materials that can be directly traced to the manufacturing of a product and are considered a variable cost.