Mild to moderately elevated platelet counts are commonly seen when chronic inflammation is present. In other cases a high platelet count can signal a more serious blood problem known as a myeloproliferative disorder (abnormal growth of blood cell elements within the bone marrow).

Should I worry about a slightly elevated platelet count?

Seek immediate medical care (call 911) if high platelets are accompanied by a persistent headache, difficulty breathing, dizziness, seizures, changes in speech, or confusion or loss of consciousness for even a brief moment. If your high platelets condition is persistent or causes you concern, seek prompt medical care.

Is 480 a high platelet count?

A normal platelet count ranges from 150,000 to 450,000 platelets per microliter of blood. Having more than 450,000 platelets is a condition called thrombocytosis; having less than 150,000 is known as thrombocytopenia.