###Human: My hematocrit, RBC, Hb, and mean cell volume are elevated. Please help. ###Assistant: Hello. Your hemoglobin and hematocrit values are slightly high. Your RBC count is only marginally elevated since the upper limit of normal is 5.5 million/cu.mm. With these values, there is a suspicion of you having hemochromatosis or an early stage of polycythemia vera. In hemochromatosis, there is iron overload and the two main tests required are serum ferritin and serum transferrin saturation. Genetic testing is confirmatory. For polycythemia vera, the red cell mass needs to be determined and preferably a bone marrow biopsy. Testing for the JAK 2 gene is confirmatory. It is better to get these conditions ruled out since they require treatment.