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 ...

A high platelet count can lead to blood clots and bleeding, which can be dangerous. Reactive thrombocytosis is often linked to another condition like an infection or inflammation and usually resolves ...

Medically reviewed by Douglas A. Nelson, MDMedically reviewed by Douglas A. Nelson, MD Thrombocytosis, or a high platelet count, is diagnosed when platelet levels are greater than 450,000 platelets ...

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 ...

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 (ET) is a type of myeloproliferative neoplasm (MPN), a rare blood disorder that causes an increase in the number of blood cells. Some symptoms include headaches, dizziness, ...

A high red blood cell count can occur for many reasons, including excessive cell production, changes in blood volume, or underlying medical conditions. Sometimes, the cause is unknown. Erythrocytes, ...

Depakote is a medication that contains divalproex sodium. It can treat seizures, mania, and migraine headaches. Thrombocytopenia is a potential side effect. The molecule divalproex sodium breaks down ...