Is it normal to get high platelets of 550 every time you have blood analysis ?

No.: There is probably a reason for your high platelets. You should probably ask your doc. Common causes are anemia and essential thrombocytosis.

No: But there are many reasons why they could be high, including inflammation.

Suggests something: increased platelets may suggest something else. It made not be anything bad but it needs to be clarified. Ask your physician to help clarify why you have increased platelets.