My brother's red blood cells are elevated. He has been off meds for 2 months per his doc's decision. Recent test show that the red blood cells are still high. Is this an indicator of something?

I would need to know a bit more about your brother's elevatedred blood cells. Most patients with red blood cell problems have too few cells (anemia), but on occasion some have too many. The most common cause of having too many red blood cells is the use of steroids (e.g. testosterone supplements). The condition of too many red cells is called erythrocytosis or polycythemia. Different treatments are available for this condition; The specific treatment would depend on the number of red blood cells and the cause of your brother's problem.