My immediate thought is, 'What does your doctor say?'
If it's a benign condition (googling 'high platelet count,' it does seem possible), ask your doctor if you are a good candidate for platelet donation at the Red Cross. They always need donors - for people who need platelets, such as some who undergo chemotherapy treatments. Might as well make good use of your abundance if it's nothing that is significant to your health!
Edited by: ALGEBRAGIRL at: 10/5/2011 (17:40)