Iron tests measure different substances in the blood to check iron levels in your body. Iron is a mineral thats essential for making red blood cells. Red blood cells carry oxygen from your lungs to the rest of your body. Iron is also important for healthy muscles, bone marrow, and organ function. Iron levels that are too low or too high can cause serious health problems.

Zinc can be tested along with other trace elements (e.g iron, copper & selenium) to identify deficiencies where a person may benefit from supplementation. When a person displays clinical symptoms that may be associated with zinc deficiency, the measurement of zinc can determine if supplementation is required.