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Thrombocytosis, or a high platelet count, is diagnosed when platelet levels are greater than 450,000 platelets per microliter of blood. It's not always obvious when to worry about a high platelet count. Many times, a high platelet count isn't serious and may not cause symptoms.
A high platelet level may be detected in a routine blood test known as a complete blood count. It's important to determine whether it's reactive thrombocytosis or essential thrombocythemia to choose the best treatment options.
High platelets is a condition in which the blood contains more platelets than usual. Platelets, or thrombocytes, are small blood cell fragments that assist in blood clotting and help stop bleeding. Clinicians can identify a high platelet count through routine blood tests.
Inflammatory conditions like autoimmune diseases, cancer or trauma, as well as certain infections and iron deficiency, are common causes of a high platelet count. Treatment is directed at the stimulus, and the platelet count returns to normal once resolved.
What if I have a high platelet count? If your platelet count is high, your platelets may stick together and cause unnecessary clotting in your blood vessels. Blood clots can lead to heart attack and stroke. Your risk depends on what’s causing high platelets.
What does it mean when your platelet count is high? A high platelet count can occur when something causes the bone marrow to make too many platelets. When the reason is...
Function. What do platelets do? Your platelets’ primary function is to stop bleeding if a blood vessel gets damaged. During an injury, platelets cluster together at the site of the wound to act as a plug. They also help seal the blood vessels in a process called clotting (coagulation) to prevent excess blood from leaving your body.
A normal platelet count is 150,000 to 450,000 platelets per microliter (mcL) of blood. A diagnosis of thrombocytosis is made when platelets are higher than 450,000 per mcL. This article discusses the types, symptoms, causes, and diagnosis of thrombocytosis. Yoshiyoshi Hirokawa / Getty Images. Types of Thrombocytosis.
As thrombocytosis doesn’t typically cause symptoms, the first sign is often a high platelet count that shows up during routine blood work (complete blood count). Thrombocytosis involves having more than 450,000 platelets per microliter of blood.
QUICK FACTS. High Platelet Count. (Thrombocythemia) By The Manual's Editorial Staff. Reviewed/Revised May 2024. VIEW PROFESSIONAL VERSION. Get the full details. What causes a high platelet count? |. What are the complications of a high platelet count? |. What are the symptoms of a high platelet count? |.