Having a platelet count of 534 puts you at risk of having blood clots. You could also be at risk for bleeding because your platelets may not clot correctly. This could be due to any number of things including malignancy, as you mentioned, or something as simple as arthritis. Have you had any injury to your spleen recently (like a car accident)? Please go see your doctor for treatment. Normal platelet counts are between 150-450, so you're not exceedingly high. I've seen people up to 1,000. Anyhow, if you are concerned you should see a doctor to alleviate any fears. I hope this helps you.

What would cause a platelet count of 470 in a five year old?

Hello- I was wondering if you found out any information regarding a high platelet count? My 11 year old daughters count keeps rising also, but we don't know why. She does have a thyroid nodule that is going to be removed and tested in a few weeks. Her docs don't think the two are related. Let me know any info if you can. Good luck-