A normal platelet count in adults ranges from 150,000 to 400,000 platelets per microliter (mcL) or 150 to 400 × 109/L. Platelets are tiny blood cells that help stop bleeding by forming blood clots. However, normal value ranges may vary slightly depending on the laboratory performing the test and the method used for measurement.
Here are some factors that can affect a platelet count:
- Age: Platelet count ranges can vary depending on a person's age.
- Gender: On average, women have a slightly higher platelet count than men.
- Medications: Some medications, such as aspirin and other blood thinners, can lower platelet count.
- Medical conditions: Certain medical conditions, such as leukemia and autoimmune diseases, can also affect platelet count.
A platelet count below 150,000 is considered low and may indicate a condition called thrombocytopenia. A low platelet count can increase the risk of bleeding, while a high platelet count (greater than 450,000) can increase the risk of blood clots.
