Which statement accurately describes a normal platelet count range?

Which statement accurately describes a normal platelet count range?

• A. Normal range is 150,000-450,000/mm³
• B. Normal range is 10,000-50,000/mm³
• C. Normal range is 1,000,000-2,000,000/mm³
• D. Normal range is 600,000-1,000,000/mm³

Answer: (A)

A healthy platelet count falls within about 150,000 to 450,000 per microliter of blood (mm^3). This range is the standard reference interval used by most labs, so it best matches normal physiology. Counts far below this, such as 10,000–50,000, suggest thrombocytopenia with bleeding risk, while counts well above, like 600,000–1,000,000, indicate thrombocytosis with clotting risk. Thus, 150,000–450,000/mm^3 is the correct description of a normal platelet count.

A healthy platelet count falls within about 150,000 to 450,000 per microliter of blood (mm^3). This range is the standard reference interval used by most labs, so it best matches normal physiology. Counts far below this, such as 10,000–50,000, suggest thrombocytopenia with bleeding risk, while counts well above, like 600,000–1,000,000, indicate thrombocytosis with clotting risk. Thus, 150,000–450,000/mm^3 is the correct description of a normal platelet count.