What is a normal platelet range?

The normal platelet range for most adults typically falls between 150,000 and 450,000 platelets per microliter of blood. Therefore, the range of 140,000 to 340,000 fits well within this normal range, making it the correct choice. Platelets are essential for blood clotting, and having an adequate count is crucial for preventing excessive bleeding or thrombosis.

The other ranges presented do not completely align with the clinically accepted normal platelet count. The range of 100,000 to 150,000 indicates a borderline low count that may necessitate further evaluation. A range of 300,000 to 400,000 represents a higher count, which may be concerning in certain contexts, while 50,000 to 100,000 is indicative of thrombocytopenia, a condition that can lead to increased bleeding risks.