What are the functions of the different parts of blood (red blood cells, white blood cells, platelets, plasma)?
Too long. There is no way to fit an answer to this question in 400 characters. However, if you go to this website you will find a very complete answer that is very easy to understand: http://www.hematology.org/Patients/Basics/
What can cause my platelets, white blood cells and red blood cells are all high causing leukocytosis, mild thrombocytosis and macrocytes?
Inflammation . Macrocytes are white blood cells too. Also depends how high they are. Very mild elevation like 10-13 for WBC and 400-450 for platelets could be lab variations too. If mild to moderate suggests inflammation which can be from infection, autoimmune disorders. If very high, blood disorders are a concern. Whomever ordered the test should follow up with u. Read more...