Understanding your Iron Studies (Iron Panel) results
Iron studies describe the body's iron status in more detail than a blood count. Serum iron is the iron circulating in the blood, bound to the protein transferrin. TIBC (total iron-binding capacity) shows how much transferrin is available to carry iron, and it rises when stores run low. Transferrin saturation is the share of transferrin that is carrying iron. Ferritin is the protein that stores iron inside cells and is the main marker of the body's iron stores. In iron deficiency, ferritin and serum iron are low and TIBC is high; in iron overload the pattern is reversed.
The ranges on this page are commonly quoted adult reference ranges. Laboratories set their own, so the range printed on your report is the one that applies to your result.
Fasting required: Zavis's record for this test lists fasting but gives no duration, so ask the lab how long to fast before your sample is taken.
Commonly quoted adult reference ranges
>>>| Parameter | Reference range | Unit |
|---|---|---|
| Serum iron | 60–170 | µg/dL |
| TIBC (total iron-binding capacity) | 250–370 | µg/dL |
| Transferrin saturation | 20–50 | % |
| Ferritin, men | 30–300 | ng/mL |
| Ferritin, women before menopause | 12–150 | ng/mL |
| Ferritin, women after menopause | 30–200 | ng/mL |
What a high Iron Studies (Iron Panel) result can mean
High ferritin needs careful reading. Ferritin rises with inflammation, infection, fatty liver disease and excess weight, so a high value does not on its own mean there is too much iron. Iron overload (haemochromatosis) typically shows very high ferritin together with high transferrin saturation. It can be inherited, or it can follow repeated blood transfusions.
What a low Iron Studies (Iron Panel) result can mean
Iron deficiency develops in stages: ferritin falls first as stores are used up, then serum iron and transferrin saturation fall while TIBC rises, and finally haemoglobin drops and anaemia appears. A low ferritin can therefore show depleted iron stores while haemoglobin is still within range. Symptoms linked to low iron include tiredness, hair loss and reduced exercise tolerance.
How a doctor reads the result
A doctor will usually interpret iron studies alongside a full blood count, your symptoms, diet and any source of blood loss, such as heavy periods. Thalassaemia trait can resemble iron deficiency on a blood count, and iron studies help to tell the two apart. Whether iron is needed is a decision for a doctor who has seen the full result.
Follow-up a doctor may arrange
After low iron results, a doctor will usually look for the cause, including diet, heavy periods and blood loss from the gut, and may repeat the blood count and ferritin later. When ferritin is normal but red cells are small, a doctor may arrange haemoglobin electrophoresis to look for thalassaemia trait. After high ferritin, a doctor may check transferrin saturation, liver tests and markers of inflammation.
Related tests
>>>Iron Studies (Serum Iron, TIBC, Ferritin): preparation
Fasting is required. Sample type: blood. Zavis has no published price for the Iron Panel test. The services that publish prices list serum iron, TIBC and ferritin as separate tests, or sell an iron panel without ferritin, so Zavis shows no price for this panel. Ask the lab for its price before you book.
More about Iron Studies (Serum Iron, TIBC, Ferritin)Frequently asked questions
What are the commonly quoted reference ranges for Iron Studies (Iron Panel)?
Commonly quoted adult reference ranges are: Serum iron: 60–170 µg/dL; TIBC (total iron-binding capacity): 250–370 µg/dL; Transferrin saturation: 20–50 %; Ferritin, men: 30–300 ng/mL; Ferritin, women before menopause: 12–150 ng/mL; Ferritin, women after menopause: 30–200 ng/mL. Laboratories set their own ranges, so the range printed on your report is the one that applies to your result.
What can a high Iron Studies (Iron Panel) result mean?
High ferritin needs careful reading. Ferritin rises with inflammation, infection, fatty liver disease and excess weight, so a high value does not on its own mean there is too much iron. Iron overload (haemochromatosis) typically shows very high ferritin together with high transferrin saturation. It can be inherited, or it can follow repeated blood transfusions.
Is fasting needed for Iron Studies (Iron Panel)?
Fasting is required. Sample type: blood. Zavis's record for this test lists fasting but gives no duration, so ask the lab how long to fast before your sample is taken.
How often are Iron Studies (Iron Panel) results rechecked?
There is no single interval that suits everyone. A doctor can advise whether and how often to test, based on your health, any treatment and your earlier results.
Medical disclaimer: The information on this page is provided for general educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Reference ranges are general guidelines. Your doctor will interpret your results in the context of your full clinical picture, symptoms, and medical history. If you have concerns about your test results, always consult a licensed healthcare professional. Do not delay seeking medical advice or disregard professional medical guidance because of information on this page.