High Ferritin on a Blood Test: What It Means
Medically Reviewed by Dr. Pedro Yelamo Vera, MD
Licensed Physician No. 484814280 · Official Medical College of Bizkaia (Spain)Last reviewed: 31 October 2026
High ferritin is usually from fatty liver, alcohol or inflammation, not iron overload. Normal ranges, UK, US and Spain cut-offs, and what happens next.
You don't have to figure this out alone
Dr. Pedro Yelamo Vera is an independent, bilingual GP licensed in Spain. Book a 15-minute video consultation in English or Spanish for €50, with a private electronic prescription issued under Spanish law when clinically appropriate.
A high ferritin result rarely means you have too much iron. Ferritin rises with fatty liver, being overweight, alcohol, infection and inflammation. The next step is a second test called transferrin saturation. If it is normal, an everyday cause is likely. If it is high, a doctor checks for haemochromatosis, an inherited iron overload.
- Typical ferritin range: 30 to 400 ng/mL in men and 13 to 150 ng/mL in women. Labs vary.
- Most high results in adults are linked to weight, fatty liver, blood sugar or alcohol.
- Infection, inflammation and liver disease also raise ferritin for a while.
- Transferrin saturation tells the doctor whether real iron overload is possible.
- Haemochromatosis is treated by removing blood. Diet alone is not enough.
Dr. Pedro Yelamo Vera is a GP licensed in Spain (Colegiado No. 484814280).
For a medical emergency, call 112 or go to the nearest local emergency department. Do not wait for a video consultation or an online reply.
What is a normal ferritin level?
Ferritin is a protein that stores iron. A blood test shows how much iron your body keeps in reserve. MedlinePlus gives these normal ranges:
- Men: 30 to 400 ng/mL.
- Women: 13 to 150 ng/mL.
Each lab sets its own range, so read the one printed next to your result. UK labs often write µg/L. It is the same number as ng/mL, so no conversion is needed.
On a Spanish report, look for ferritina. Iron is hierro or sideremia. Transferrin saturation is índice de saturación de transferrina, often shortened to IST. An "H" or a star means the value is above the range.
What level counts as high ferritin in the UK, the US and Spain?
There is no single cut-off. Rules differ by country and by lab:
| Where | Usually called high | Iron overload clue |
|---|---|---|
| UK (NHS Lothian GP pathway, Scotland) | Over 300 µg/L in men and women after menopause; over 200 µg/L in women before menopause | Transferrin saturation over 50% in men or over 40% in women |
| US (Mayo Clinic) | Over 200 to 300 in men; over 150 to 200 in women | Transferrin saturation of 45% or more |
| Spain | Above the range printed by your lab | A Spanish internal medicine study advises testing when saturation is above 45% |
The UK pathway also asks for a specialist review when ferritin is above 1,000 µg/L with no clear cause.
What causes high ferritin?
Ferritin goes up when the body stores more iron. It also goes up with inflammation, even when iron is normal. MedlinePlus lists these causes:
- Inflammation from an infection, an operation or an autoimmune disease such as rheumatoid arthritis.
- Liver disease, including fatty liver and liver damage from alcohol.
- Obesity and heavy drinking.
- An overactive thyroid.
- Many blood transfusions.
- Some cancers.
- Too much iron, as in haemochromatosis.
The metabolic causes lead the list. In an Austrian study of 8,408 adults aged 40 to 77, 13% had high ferritin. Of those, 81% had metabolic problems such as excess weight, high blood sugar, high blood pressure or fatty liver. Doctors call this metabolic hyperferritinaemia.
Is high ferritin dangerous?
Ferritin is a signal, not a disease. What matters is the cause. A mild rise from a cold or a weekend of drinking often settles on a repeat test.
A rise linked to weight and fatty liver is worth acting on. It points to a liver under strain. True iron overload needs treatment. Without it, iron builds up in the liver, heart and pancreas. MedlinePlus says this can lead to cirrhosis, liver cancer, diabetes, heart problems and arthritis.
Got a high ferritin result and not sure what it means?
You can book a video visit with a GP licensed in Spain, in English or Spanish. He reads your whole report, asks about alcohol, weight and recent illness, and explains which tests come next.
Why does transferrin saturation matter?
Transferrin carries iron in the blood. The saturation shows how full it is. It is the best clue to real iron overload.
- High ferritin, normal saturation: usually inflammation, alcohol, fatty liver or weight. In the UK pathway, rises caused by inflammation usually come with a saturation under 50%.
- High ferritin, high saturation: iron may truly be building up. The next step is a gene test for haemochromatosis.
Iron tests are best done in the morning, and you may be asked to fast for 12 hours. Recent illness can change the results. So doctors often repeat them before drawing conclusions.
Could it be haemochromatosis?
Haemochromatosis is an inherited condition. The body absorbs too much iron from food. MedlinePlus says it is more common in men and in people of Western European descent. Women often show a high ferritin only after menopause, says the NHS Lothian pathway.
Early on there may be no symptoms. Later, people can have tiredness, joint pain, darker skin, belly pain and a low sex drive. Diagnosis uses blood tests and a test of the HFE gene. If you have it, the Mayo Clinic advises testing your parents, brothers, sisters and children.
How is high ferritin treated?
Treatment depends on the cause:
- Weight, fatty liver or alcohol: losing some weight, cutting alcohol and treating blood sugar or blood pressure. The test is then repeated to see the trend.
- Inflammation or infection: treating the illness, then repeating the test.
- Haemochromatosis: removing blood at a clinic, called venesection or phlebotomy. The Mayo Clinic says this is the main treatment. Medicines that bind iron are kept for people who cannot have it.
With iron overload, the Mayo Clinic also advises avoiding iron tablets, multivitamins with iron and vitamin C supplements. It advises avoiding alcohol and raw shellfish too. Diet changes help, but they do not replace treatment.
What about children and pregnancy?
In children, a recent infection can raise ferritin for a while. A doctor reads it with the child's own ranges and a blood count. In pregnancy, ferritin is usually checked for low iron, not high. Do not start or stop iron tablets in pregnancy without asking your midwife or doctor.
What happens next?
- Mild rise, you feel well: a repeat fasting test with transferrin saturation, liver tests, a blood count and an inflammation marker (CRP).
- High saturation: a gene test and, if positive, a specialist referral.
- Fatty liver suspected: a liver scan and a plan for weight, sugar and alcohol.
- Above 1,000 with no clear cause, or abnormal liver tests: a specialist review, often a liver doctor or a haematologist.
See a doctor today if your skin or the whites of your eyes turn yellow, or your belly or legs swell. Call 112 if you vomit blood, pass black stools, or suddenly become confused.
Talking it through with a doctor by video
Dr. Yelamo is a GP licensed in Spain. He sees adults, children and pregnant patients by video, every day from 07:30 to 20:30 (Spain time). In the visit he will:
- Read your full blood report, not just the ferritin line.
- Ask about alcohol, weight, recent illness, supplements and family history.
- Check your liver tests, blood count and transferrin saturation if you have them.
- Explain whether you need a repeat test, a gene test, a scan or a specialist.
He does not promise any test or prescription before the visit. Where clinically appropriate, following a genuine evaluation. Treatment and prescriptions are issued solely at the doctor's discretion based on evidence-based clinical guidelines.
A prescription is never guaranteed: it is issued only where clinically appropriate after a genuine evaluation, as a private electronic prescription under Spanish law. This service is for urgent, non-emergency care. In an emergency, call 112.
See how the Urgent Care video visit works. It lasts 15 minutes and costs €50.
This guide is general information. It does not replace a consultation with your doctor.
Frequently asked questions
Is high ferritin serious?
Usually not on its own. Most high results come from fatty liver, weight, alcohol or inflammation. A high transferrin saturation is the sign that needs a closer look for iron overload.
What ferritin level is too high?
Labs differ. Many count over 300 ng/mL in men and over 200 in women before menopause as high. Above 1,000 with no clear cause needs a specialist review.
Can alcohol raise ferritin?
Yes. Alcohol and the liver damage it causes are common reasons for a high ferritin. Cutting down is part of the plan, and the test is then repeated.
Do I need to fast for a ferritin test?
Sometimes. You may be asked to fast for 12 hours and have the test in the morning, especially when iron and transferrin saturation are checked too.
Should I stop eating red meat?
Diet alone rarely fixes a high ferritin. If you have iron overload, avoid iron and vitamin C supplements and alcohol. Treatment is removing blood.
What is ferritina on a Spanish blood test?
It is the Spanish word for ferritin. It is usually shown in ng/mL. Transferrin saturation appears as índice de saturación de transferrina, or IST.
Sources
- MedlinePlus: Ferritin blood test
- MedlinePlus: Ferritin blood test (lab tests)
- Mayo Clinic: Hemochromatosis diagnosis and treatment
- NHS: Haemochromatosis diagnosis
- Gensluckner et al., Biomedicines: Metabolic hyperferritinemia in a Central European cohort
Related guides
Medical Citations & Sources
This content is written and reviewed by a licensed physician with reference to the following official health authorities.
