Welcome to Connect, @1pearl. That diagnosis out of the blue had to really hit you like a ton of bricks! Having a platelet level considerably higher than normal has the potential for risk of stroke or blood clots. Hydroxyurea is a medication that is used by people whose bone marrow is producing too many of a specific type of blood cells. In your case it is too many platelets. The low dose aspirin, taken daily, acts as a blood thinner to keep platelets from sticking together and forming blood clots.

You mentioned the level dropped 25% from the first labs.
If you wouldn’t mind sharing a little more about your experience, I’m curious about how high was your first reading? Are you seeing a hematologist for your diagnosis?
Were you ill with a virus or other infection in the weeks before your first set of labs?
How much time was between the first and 2nd set of labs?