Reviewed by The Wellness Clinical Team. Last reviewed 22 October 2026.
Quick answer, as of October 2026: A high ferritin most often reflects inflammation, fatty liver, alcohol or metabolic syndrome rather than too much iron. Ferritin rises whenever the body is inflamed, so doctors check transferrin saturation to tell the difference. A raised transferrin saturation points towards iron overload, such as haemochromatosis. The Online GP by The Wellness offers doctor-led blood panels from £350.
What does a high ferritin mean?
Ferritin is a protein that stores iron inside the body's cells, and the small amount in the blood reflects those stores. It is also an acute phase protein, which means it rises during inflammation, infection and liver stress, whatever the iron level. A low ferritin reliably means low iron. A high ferritin needs interpreting.
The British Society for Haematology guideline on a raised serum ferritin, last reviewed in April 2024, lists iron overload, inflammation, liver or kidney disease, malignancy and metabolic syndrome as causes, and names transferrin saturation as the key next test.
Key points
- Genomics Education guidance defines iron overload as a transferrin saturation above 50% with ferritin above 300 µg/L in men, or a transferrin saturation above 45% with ferritin above 200 µg/L in women, with no other explanation such as inflammation.
- In a Newcastle hospital study of 150 people with a ferritin of 1,500 µg/L or more, hereditary haemochromatosis accounted for 8.6% of cases and was only the 10th most common cause.
- About 1 in 150 people in the UK are estimated to carry two copies of the C282Y gene change, the type most likely to cause iron overload.
- In a UK Biobank study of 451,243 people, men with two copies of C282Y had 4.3 times the odds of liver disease and about twice the odds of osteoarthritis and rheumatoid arthritis.
- An NHS trust guideline advises hepatology referral when ferritin is above 1,000 µg/L, or with an enlarged liver or raised ALT.
What level of ferritin counts as high?
Laboratory ranges differ, so use the range printed on your own result. What helps more than a single number is the pairing of ferritin with transferrin saturation. Genomics Education guidance on suspected haemochromatosis defines iron overload as a transferrin saturation above 50% with ferritin above 300 µg/L in men, or above 45% with ferritin above 200 µg/L in women, without an alternative explanation such as inflammation.
A ferritin above 1,000 µg/L is a level at which an NHS trust guideline on haemochromatosis advises referral to hepatology. Most raised ferritin results are far lower than this and have a simpler explanation.
Send your ferritin result to a doctor on WhatsApp
What are the most common causes of high ferritin?
Most raised ferritin results are caused by something other than iron overload. In a Newcastle hospital study of 150 people with ferritin of 1,500 µg/L or more, published in the World Journal of Gastroenterology in 2006 using 2002 data, renal failure, haematological disease and alcohol-related liver disease were each more common than haemochromatosis.
- Inflammation or infection, including a recent cold, flu or flare of an inflammatory condition.
- Fatty liver and metabolic syndrome, often alongside raised blood sugar, triglycerides or waist size.
- Alcohol and other liver disease.
- Kidney disease.
- Some cancers and blood disorders, which are much less common.
- Iron overload, from haemochromatosis or repeated blood transfusions.
How do doctors tell iron overload from inflammation?
Doctors tell iron overload from inflammation mainly by measuring transferrin saturation, the proportion of the blood's iron transport protein that is carrying iron. In inflammation, ferritin rises but transferrin saturation stays normal. In iron overload, both are raised.
The NHS trust guideline advises first-line tests of a full blood count, liver and kidney tests, CRP and a fasting transferrin saturation. If ferritin is raised with a normal transferrin saturation, it advises considering inflammation, diabetes, alcohol, liver dysfunction and metabolic syndrome, and checking blood pressure, BMI, CRP, GGT, glucose, triglycerides and cholesterol, with a liver ultrasound where appropriate. A genetic test for haemochromatosis is considered when transferrin saturation stays raised.
Our guide to what a full private blood test should include explains how iron studies fit into a wider panel.
What is haemochromatosis?
Haemochromatosis is an inherited condition in which the body absorbs too much iron from food, which builds up in the liver, joints, pancreas and heart over years. Haemochromatosis UK describes it as the UK's most common genetic condition, directly affecting over 380,000 people.
Early symptoms are often vague. Haemochromatosis UK lists joint pain, fatigue and cognitive or psychological problems as the three most common early symptoms.
- In the UK Biobank study published in the BMJ in 2019, 2,890 of 451,243 people, about 1 in 156, had two copies of C282Y.
- Men with two copies had 4.3 times the odds of liver disease, 2.2 times the odds of rheumatoid arthritis, 2.0 times the odds of osteoarthritis and 1.5 times the odds of diabetes.
- By the end of follow-up, haemochromatosis had been diagnosed in 21.7% of men and 9.8% of women with two copies.
The primary treatment is venesection, the regular removal of blood, according to Haemochromatosis UK. Genomics Education guidance notes that damage to organs can be prevented if treatment starts early.
Ask a doctor on WhatsApp whether you need iron studies
Should I stop taking iron supplements?
Tell the doctor about any iron supplement or multivitamin containing iron before your test. If your ferritin is high, ask the doctor whether to keep taking iron until the cause is known. Iron supplements are best taken when a blood test has confirmed low iron.
When does a high ferritin need prompt attention?
A high ferritin needs prompt assessment if it is above 1,000 µg/L, if liver tests are abnormal, or if it comes with unexplained weight loss, night sweats, yellowing of the skin or eyes, or a new lump. These are uncommon, but they are the reason a raised ferritin should be reviewed by a doctor rather than ignored.
How much does a ferritin and iron blood test cost?
As of October 2026, The Online GP by The Wellness offers three doctor-led blood panels. Longevity+ starts from £1,395, Advanced Health from £650 and Core Wellness from £350. A doctor confirms iron studies and any further markers before you book, and every result is explained by a GMC-registered doctor.
A video consultation to review a ferritin result from elsewhere starts from £150 for up to 30 minutes. Book a blood test or results review on WhatsApp
Can a doctor tell me what my high ferritin means?
Yes. Send your ferritin result, any other recent blood tests and how you have been feeling on WhatsApp. A doctor tells you whether you need repeat iron studies, a wider panel or a consultation.
Frequently asked questions
Can high ferritin be temporary?
Yes. Ferritin rises during infections and inflammation, so a repeat test when you are well often gives a clearer answer.
Does alcohol raise ferritin?
It can. Alcohol-related liver disease was the most common single cause of a ferritin of 1,500 µg/L or more among local patients in the Newcastle study, and the NHS trust guideline lists alcohol excess among the causes of a raised ferritin.
Is high ferritin dangerous?
High ferritin itself is a marker, not a disease. What matters is the cause, which can range from a recent cold to fatty liver or iron overload.
What is a normal transferrin saturation?
Genomics Education guidance treats a transferrin saturation above 50% in men or above 45% in women, with a raised ferritin and no other explanation, as iron overload.
Do I need to fast for an iron test?
The NHS trust guideline recommends a fasting transferrin saturation, so ask the doctor how to prepare when you book.
Sources
- Investigation and management of a raised serum ferritin, British Society for Haematology, 2018, last reviewed April 2024: https://b-s-h.org.uk/guidelines/guidelines/investigation-and-management-of-a-raised-serum-ferritin
- Genomics Education Programme, GeNotes, Patient with iron overload, suspected hereditary haemochromatosis: https://www.genomicseducation.hee.nhs.uk/genotes/in-the-clinic/presentation-patient-with-iron-overload-suspected-hereditary-haemochromatosis/
- Diagnosis and management of genetic haemochromatosis, NHS guideline (UHBW): https://www.uhbw.nhs.uk/assets/1/23-100_diagnosis_and_management_of_genetic_haemochromatosis_redacted.pdf
- Hearnshaw S, Thompson NP, McGill A, The epidemiology of hyperferritinaemia, World Journal of Gastroenterology, 2006: https://pmc.ncbi.nlm.nih.gov/articles/PMC4100669/
- Pilling LC et al, Common conditions associated with hereditary haemochromatosis genetic variants, BMJ, 2019: https://www.bmj.com/content/364/bmj.k5222
- Haemochromatosis UK, Diagnosis: https://www.haemochromatosis.org.uk/diagnosis-and-care-by-gps
This article is general information and not a substitute for medical advice about your own health.