A ferritin test measures the protein that stores iron inside your cells, so it is the single best blood marker of how much iron your body has banked. Finding your ferritin test normal range is essential for understanding your overall health, as a normal result for most adults sits roughly between 20 and 300 ng/mL (ng/mL is the same as µg/L), though the healthy floor is different for women, men and pregnancy. A low ferritin points to depleted iron stores; a high ferritin can mean iron overload or, importantly, hidden inflammation.
What is a ferritin test?
Ferritin is the storage form of iron. Your body keeps most of its spare iron locked inside ferritin molecules, mainly in the liver, spleen and bone marrow, and releases it when the blood needs more iron to build haemoglobin. Because a small amount of ferritin also circulates in the bloodstream in proportion to those stores, a simple blood draw gives your doctor a window into your iron reserves.
A doctor typically orders a ferritin test when you feel persistently tired, look pale, get breathless on mild exertion, have hair fall or brittle nails, or when a routine complete blood count (CBC) hints at anaemia. It is also checked to monitor pregnancy, heavy menstrual bleeding, chronic kidney disease, or the opposite problem — suspected iron overload. You can see how ferritin fits alongside other panels on our lab tests guide.
The key idea that makes ferritin so useful is timing: ferritin falls first, long before anaemia shows up. When iron intake cannot keep pace with need, the body quietly drains its ferritin stores to protect haemoglobin. So your ferritin can already be low while your haemoglobin — and therefore a basic CBC — still reads normal. That early-warning quality is exactly why it is worth measuring.
Ferritin normal range
ExaHealth reports ferritin in ng/mL, which Indian laboratories often print as µg/L — the two units are numerically identical. As a general reference, a ferritin of 20-300 ng/mL is considered normal for a broad adult population, with values below this range signalling declining iron stores and values above it warranting a closer look. The banded reference below shows how ExaHealth grades results from very low to very high.
Ferritin (ng/mL) | Interpretation |
|---|---|
0-5 | Critically low iron stores |
6-9 | Severely low |
10-14 | Moderately low |
15-19 | Borderline low |
20-300 | Normal |
301-500 | Borderline high |
501-1000 | Moderately high |
1001-5000 | Severely high |
Above 5000 | Critically high |
Treat these bands as a guide, not a diagnosis. Reference intervals vary a little between laboratories, and your result is always read together with your symptoms, your CBC and, when needed, inflammatory markers.
Normal range by age, sex and condition
Ferritin is one of the clearest examples of a test where “normal” genuinely depends on who you are. Iron needs differ by sex, by life stage and by whether the body is under extra demand, so the healthy floor shifts accordingly. The table below is built from ExaHealth's condition-specific reference rows.
Group | Normal ferritin (ng/mL) | Source | Why it differs |
|---|---|---|---|
Adult women | 10-150 | WHO | Monthly menstrual blood loss steadily drains iron, so the reference floor is lower and low readings are more common. |
Adult men | 30-300 | WHO | Without menstrual losses, men bank more iron; a ferritin under 30 is treated as low and under 10 as a clear deficiency. |
Pregnancy (overall) | 20-300 | WHO | Iron demand rises two- to three-fold to build the expanded maternal blood volume and support fetal development. |
Pregnancy — 1st trimester | 30-200 | ACOG | Adequate stores early on protect against deficiency as demand climbs; below 30 is flagged for iron support. |
Pregnancy — 2nd trimester | 30-200 | ACOG | Rapid expansion of blood volume makes maintaining a healthy floor essential through mid-pregnancy. |
Pregnancy — 3rd trimester | 30-200 | ACOG | Fetal iron transfer peaks late in pregnancy, keeping the target floor higher than the non-pregnant default. |
Post-menopause | 20-300 | WHO | Once menstruation stops, iron losses ease and stores tend to rise, so the healthy floor lifts back toward 20. |
Endurance athletes | 30-200 | Performance reference | Training raises iron turnover; keeping ferritin at or above 30 supports oxygen delivery and endurance performance. |
The headline difference is the floor. A ferritin of 18 ng/mL might look reassuringly “not too far below normal,” yet for a man it sits well under the 30 threshold and for a pregnant woman it is clearly inadequate. This is why the same number can mean very different things depending on who you are — and why women and pregnancy deserve special attention when reading a ferritin report.
What high ferritin means
A high ferritin has two very different explanations, and telling them apart is the whole job. The first is genuine iron overload — conditions such as hereditary haemochromatosis, or repeated blood transfusions, load the body with excess iron that accumulates in ferritin and, over years, can damage the liver, heart and pancreas. Values climbing into the high hundreds and beyond, especially with a raised transferrin saturation, prompt this line of investigation.
The second, and more common, explanation is that ferritin is an acute-phase reactant: it rises with infection, inflammation, liver disease and obesity, independent of iron stores. This matters enormously. A “normal” or even high ferritin can mask a true iron deficiency when inflammation is present, because the inflammation pushes the number up while the underlying stores are actually empty. That is why doctors interpret ferritin alongside inflammatory markers and the clinical picture rather than in isolation. Very high ferritin can therefore reflect iron overload, liver disease or chronic inflammation — the context decides which.
What low ferritin means
Low ferritin is the more frequent finding, and it is unambiguous: it means the iron tank is running dry. The WHO defines iron deficiency in adults as a ferritin below 15 ng/mL, while a more sensitive cutoff of below 30 ng/mL is often used clinically to catch deficiency earlier, particularly in menstruating women. Common causes include an iron-poor diet, heavy menstrual periods, pregnancy, blood loss from the gut, and poor absorption.
Symptoms build gradually — fatigue, breathlessness on stairs, pallor, cold hands and feet, headaches, hair fall, brittle spoon-shaped nails, and sometimes a craving to chew ice or non-food items. Because ferritin drops before haemoglobin does, you can have all the early symptoms of iron deficiency while your CBC still looks normal; catching it at the ferritin stage means it can be addressed before it progresses to iron-deficiency anaemia, which is a widespread concern in India. A related nutritional gap worth checking alongside iron is covered in our vitamin B12 guide for vegetarians.
How to manage or improve your ferritin
The right response depends entirely on the direction of the problem, so the first step is always to review your result with a doctor rather than self-treating. For low ferritin, the foundations are dietary and, when a doctor advises, supplemental.
Eat iron-rich foods. Plant sources central to Indian kitchens include spinach and other dark leafy greens, rajma, chana, lentils, bajra, jaggery, sesame and dates. Animal sources such as red meat, liver, poultry, fish and eggs provide the more readily absorbed form of iron.
Pair iron with vitamin C. A squeeze of lemon over dal, or amla, guava, oranges and tomatoes in the same meal, meaningfully improves absorption of plant iron — a simple habit that matters for the many vegetarians in India who rely on plant sources.
Watch absorption blockers. Strong tea and coffee taken with meals reduce iron uptake, so it helps to keep them between meals rather than alongside your main iron-rich plate.
Do not self-prescribe iron tablets. Iron supplements are effective but should be taken on medical advice, because unnecessary iron is harmful and a high ferritin needs the opposite approach.
For high ferritin, management centres on finding the cause — distinguishing iron overload from inflammation — and treating that, which is firmly a doctor-led process. See a doctor if you have persistent fatigue or breathlessness, heavy periods, a family history of haemochromatosis, or any ferritin result flagged outside your reference range. Because ferritin shifts with diet, blood loss and inflammation over time, it is a marker worth trending rather than reading once; you can keep your results together and watch the pattern with ExaHealth.
Guidelines and references
World Health Organization (WHO) — iron deficiency thresholds and adult, menopausal and pregnancy ferritin references.
American College of Obstetricians and Gynecologists (ACOG) — pregnancy-adjusted ferritin references by trimester.
Frequently asked questions
What is a normal ferritin level?
For a broad adult population a normal ferritin is roughly 20-300 ng/mL. The healthy floor is lower for women (from about 10) and higher for men (from about 30), so your result is read in the context of your sex and life stage.
What is the normal ferritin range for women?
The WHO reference for adult women is about 10-150 ng/mL. Because monthly menstrual blood loss drains iron, low ferritin is more common in women, and many clinicians treat a value under 30 ng/mL as a sign of early deficiency.
Can ferritin be normal even if I am iron deficient?
Yes. Ferritin rises with infection, inflammation, liver disease and obesity, so it can read normal or high while your actual iron stores are empty. When inflammation is suspected, your doctor interprets ferritin alongside other markers.
What is the difference between ferritin and haemoglobin?
Haemoglobin measures the iron currently carried in your red blood cells, while ferritin measures your stored iron reserve. Ferritin falls first, so it can flag iron deficiency well before haemoglobin drops and anaemia appears on a CBC.
At what ferritin level is iron deficiency diagnosed?
The WHO defines iron deficiency in adults as a ferritin below 15 ng/mL. A more sensitive cutoff of below 30 ng/mL is often used clinically to catch deficiency earlier, especially in menstruating women.
What does a very high ferritin mean?
A very high ferritin can reflect iron overload conditions such as haemochromatosis, or it can signal liver disease or chronic inflammation. The cause is worked out with your doctor using additional tests rather than the ferritin number alone.