hi mandy, Sorry I can only give u advice going off my experience with my daughter. She was admitted to hospital due to abnormal blood counts but they were way off. And I may be wrong but I think platelets are usually low in leukemia as were my daughters. Also I know blood counts can go up and down and its not classed as abnormal aslong as they are within the normal range. However random bruising and petechiae are something that needs to be checked out- I would personally get a second opinion, good luck and best wishes