Blood Health

IRON (Serum)

A healthy result should fall into the range 9 - 30.4 umol/L.

Iron is abbreviated Fe and an essential element required for hemoglobin production. Hemoglobin oxygenates the blood. Without iron, red blood cells cannot reproduce in the body. Iron is found in different parts of the body – blood (called transferrin), muscle, liver (called ferritin) and enzymes in the body. About 65% of the iron in the body is found in the blood.

Interestingly, doctors working with patients who have hair loss have found that adequate iron levels may be tied to the ability to regrow hair. 

A serum iron test measures iron levels in the serum component of the blood. A serum iron test is ordered after abnormal results are found in a hemoglobin test or a complete blood count, or when you are showing symptoms of anemia. 

Measured in micrograms per deciliter (mcg/dl), normal ranges for serum iron differ depending on an individual’s age and sex. Child-bearing women have the highest requirements for iron because of the monthly loss of blood in their menstrual cycles. 

If your results are abnormal, additional tests will determine whether iron is being stored in your liver, not being transported to the right places in your body, or what type of anemia you have. 

Normal Ranges for Iron in mcg/dL:

Men: 65-176 mcg per deciliter (mcg/dL)

Women: 50-170 mcg per deciliter (mcg/dL)




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