Can a high platelet count be associated with any other diseases?

Written by: Dr. Rowena | Posted: Apr 26 2007

Q: I was told by my cardiologist that I have too many platelets in my blood and that I also should have my thyroid checked. Are the 2 related?

A: High platelet counts can be associated with many different disorders such as allergic reactions, infection, heart attacks, and cancer. Sometimes the cause is not identified. If your doctor suspects a thyroid disorder, you need to be tested.

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