According to the Mayo Clinic, normal hematocrit levels, or the volume of red blood cells to the total volume of blood, should range between 34.9 and 44.5 percent in women; in men, healthy levels are from 38.8 to 50 percent. Low iron levels usually indicate anemia.
To diagnose anemia or other iron-related blood disorders, doctors often look at the hematocrit levels as well as other variables, such as ferritin and hemoglobin.
Ferritin is a protein in the body which helps to store iron. Low ferritin levels usually indicate a low level of stored iron. Hemoglobin levels in healthy women should be between 12.0-15.5 g/dl and for men, the ratio is between 13.5-17.5 grams of hemoglobin per deciliter. (g/dl)