Iron is an essential trace element that is mainly derived from dietary sources. Iron is needed to assist in the formation of adequate numbers of normal red blood cells, which carry oxygen throughout the body. Iron is a critical part of hemoglobin, the protein in red blood cells that binds oxygen in the lungs and releases it as blood travels to other parts of the body.

Your liver plays a vital role in your health. It is one of the primary organs responsible for filtering blood, which is why it is important that your liver is functioning properly. In order to diagnose any damage or illness in your liver, physicians frequently ordered tests known as liver function tests (LFT).