How can I increase my hemoglobin? Generally, this question arises when we counter low hemoglobin or anemia. Hemoglobin is found in the red blood cells or RBCs, which have an important role in transferring oxygen all over the body. So it is very important to balance the hemoglobin.In this article, We will learn how to measure RBC, hemoglobin levels in different age groups, and the way to increase hemoglobin levels in the body.