A Clinical Laboratory Technician Is Asked to Determine the Concentration

question 18

Multiple Choice

A clinical laboratory technician is asked to determine the concentration of red blood cells (RBCs) from a sample of turbid knee fluid using a hemacytometer.The technician dilutes the sample with normal saline and loads it onto the hemacytometer.A total of 400 red blood cells are counted over 5 squares.What additional information is required to calculate the concentration of RBCs?

• A) The WBC count
• B) The dilution factor
• C) The number of platelets
• D) The red-cell distribution width

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Definitions:

Attractive Mate

An individual selected based on traits perceived as desirable, enhancing reproductive success in natural and sexual selection.

Disruptive Selection

A type of natural selection that favors extreme values of a trait over intermediate values, leading to two or more contrasting phenotypes in the population.

Stabilizing Selection

Mode of natural selection in which an intermediate form of a trait is adaptive, and extreme forms are selected against.

Prenatal Care

Medical and healthcare provided to a pregnant woman before delivery, aiming to ensure the health of both the mother and the developing fetus.