Transferrin Saturation – what do your numbers mean?
Have you had your Transferrin Saturation level measured and are unsure what the numbers mean? Here's a clear explanation of the normal range, what a level that is too high or too low might indicate, and when it makes sense to get tested.
What is the normal range for Transferrin Saturation?
What is the normal range for Transferrin Saturation?
Transferrin saturation indicates how much iron is bound to the transport protein transferrin in the blood. For adult men, the normal range is 15-57%, while for women under 50 years it is 10-50%, and for women over 50 years it is 15-50%. For children, values vary depending on age: under 5 years the range is 7-45%, from 5-10 years 15-40%, and from 10-14 years 10-35% for boys and 2-40% for girls. For adolescents between 14-19 years, the range is 6-35%. These values may vary slightly depending on the laboratory's measurement methods. A value close to the limits may indicate incipient iron deficiency or iron overload and should be evaluated by a doctor.
What does a low level mean?
A low level of transferrin saturation, often below 10%, can be a sign of iron deficiency. Symptoms of iron deficiency include fatigue, paleness, dizziness, and shortness of breath. The most common causes are insufficient iron intake through diet, blood loss (e.g., menstruation or gastrointestinal bleeding), and increased iron demand during pregnancy. Particularly vulnerable groups include women of childbearing age, pregnant women, children, and individuals with chronic diseases. If iron deficiency is suspected, a doctor should be contacted for further investigations, which often include measuring ferritin and C-reactive protein (CRP) to confirm the diagnosis.
What does a high level mean?
A high level of transferrin saturation, typically above 45%, can indicate iron overload, which is seen in conditions such as hemochromatosis. Symptoms may include joint pain, fatigue, abdominal pain, and darkened skin. Causes can be genetic, as in hereditary hemochromatosis, or due to repeated blood transfusions. If transferrin saturation is elevated, a doctor should be consulted for further investigation, as untreated iron overload can lead to organ damage, including liver cirrhosis and heart disease. Treatment may include phlebotomy or medical treatment to reduce iron levels.
Get your Transferrin Saturation level tested
At Celto, you can order a blood test for Transferrin Saturation directly online – without a referral from your doctor and without long waiting times. We have over 34 sample collection sites at public hospitals across Denmark, and your samples are analyzed in the same accredited laboratories used by the rest of the healthcare system. You will receive your results directly on sundhed.dk, just like all other public blood tests.
How it works
When you order a blood test from Celto, you choose which markers you want to be tested – no doctor's referral needed. After your purchase, you will receive an email with a link to our booking system, where you choose a time and place. The blood sample itself is taken by authorized healthcare personnel and typically takes only a few minutes.
Where you can get tested
Celto has over 34 sample collection sites at public hospitals and clinics throughout Denmark. You choose the location that suits you best among our partners, and there are typically available appointments within a few days. Find your nearest sample collection site →
How you get your results
Your blood samples are analyzed in the same laboratories used by your own doctor and the rest of the healthcare system – exactly the same quality and the same tests. You will receive your results directly on sundhed.dk within a few working days, and Celto will also send an easy-to-understand review of your values so you know what the numbers mean.