A high platelet count indicates too many of the small cells (platelets) that help form blood clots. This can cause dangerous clots and bleeding. Also called thrombocytosis or thrombocythemia, ...

Q: My platelets were slightly elevated on my blood test. What can cause this? A: Platelets are part of how our body forms clots to stop bleeding. They are produced in the bone marrow by cells called ...

DEAR MAYO CLINIC: I am 33 years old and recently had an annual physical and routine blood work. I'm active with two children and feel fantastic, but my platelet count came back as 651. My health care ...

Essential thrombocythemia is a chronic condition with excessive platelet production, increasing thrombosis risk, and is often linked to JAK2, CALR, or MPL mutations. Stage 1 ET is manageable with ...

You are able to gift 5 more articles this month. Anyone can access the link you share with no account required. Learn more. DEAR DR. ROACH: I am a 58-year-old female in reasonably good health. When I ...

An expert discusses the clinical presentation and diagnosis of immune thrombocytopenic purpura (ITP), emphasizing that isolated thrombocytopenia with mucosal bleeding and petechiae is highly ...

A: Platelets are part of how our body forms clots to stop bleeding. They are produced in the bone marrow by cells called megakaryocytes, and then enter the blood stream. Normal platelet counts are ...