I am from the USA and would like some clarification. I was diagnosed with PV due to elevated platelets and HCT and a positive JAC 2. I am currently managed by 500 mg of Hydroxyurea and baby aspirin, and have weaned down my therapeutic phlebotomies to one every three months. I notice that most people say they have ET with a positive JAC 2. How do you distinguish between ET and PV? Or is PV not a common term.