What is the normal range of leukocytes per cubic millimeter?

What is the normal range of leukocytes per cubic millimeter?

• A. About 5000-9000
• B. About 1000-2000
• C. About 10000-15000
• D. About 20000-30000

Answer: (A)

Normal leukocyte (white blood cell) count indicates how many immune cells are circulating in a small blood volume. In healthy individuals, this is typically about 4,000 to 11,000 cells per microliter, which is the same as per cubic millimeter. The range 5,000 to 9,000 sits squarely inside that standard interval, making it the best fit among the options. The other ranges are either too low, which would suggest leukopenia, or too high, which could indicate infection or other conditions.

Normal leukocyte (white blood cell) count indicates how many immune cells are circulating in a small blood volume. In healthy individuals, this is typically about 4,000 to 11,000 cells per microliter, which is the same as per cubic millimeter. The range 5,000 to 9,000 sits squarely inside that standard interval, making it the best fit among the options. The other ranges are either too low, which would suggest leukopenia, or too high, which could indicate infection or other conditions.