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Multiple Choice
Which of the following monocyte counts in a complete blood count (CBC) would be considered abnormally high (monocytosis) in a healthy adult?
A
Below 100 cells/bcL
B
Between 200 and 600 cells/bcL
C
Exactly 5000 cells/bcL
D
Above 800 cells/bcL
Verified step by step guidance
1
Step 1: Understand the context of the problem. Monocytes are a type of white blood cell that play a role in the immune system. Monocytosis refers to an abnormally high monocyte count in the blood, which can indicate infection, inflammation, or other medical conditions.
Step 2: Review the normal range of monocyte counts in a healthy adult. Typically, the normal range is between 200 and 800 cells/μL (microliters of blood). Values above this range are considered abnormally high.
Step 3: Analyze the options provided in the problem. Compare each option to the normal range to determine whether it falls within or exceeds the upper limit of 800 cells/μL.
Step 4: Identify the option that exceeds the upper limit of 800 cells/μL. Specifically, any value above 800 cells/μL would be classified as monocytosis.
Step 5: Conclude that the correct answer is the option stating 'Above 800 cells/μL,' as it meets the criteria for an abnormally high monocyte count in a healthy adult.