What is Ferritin Test?
A ferritin test measures the amount of ferritin in your blood. Ferritin is a blood cell protein that contains iron. A ferritin test helps your doctor understand how much iron your body is storing.
If a ferritin test reveals that your blood ferritin level is lower than normal, it indicates your body’s iron stores are low and you have iron deficiency.
If a ferritin test shows higher than normal levels, it could indicate that you have a condition that causes your body to store too much iron. It could also point to liver disease, rheumatoid arthritis, other inflammatory conditions or hyperthyroidism. Some types of cancer also may cause your blood ferritin level to be high.
Why is Ferritin Test performed?
You may have a ferritin test for several reasons:
- To diagnose a medical condition. Your doctor may suggest a ferritin test if other blood tests have shown that the level of oxygen-carrying protein in your red blood cells (hemoglobin) is low, or if the proportion of red blood cells to the fluid component in your blood (hematocrit) is low. These may indicate that you have iron deficiency anemia. A ferritin test can help confirm that diagnosis. Ferritin may also be measured in someone with restless legs syndrome. A ferritin test may also be used to help diagnose conditions such as hemochromatosis, liver disease and adult Still’s disease, among others. When used to diagnose a medical condition, a ferritin test may be done in conjunction with an iron test and a total iron-binding capacity (TIBC) and transferrin test. These tests provide additional information about how much iron is in your body.
- To monitor a medical condition. If you’ve been diagnosed with a disorder that results in too much iron in your body, such as hemochromatosis or hemosiderosis, your doctor may use a ferritin test to monitor your condition and guide treatment.
What should I know before receiving Ferritin Test?
A ferritin blood test isn’t associated with serious side effects because it requires obtaining a small sample of blood. Talk to your provider, however, if you have a bleeding condition or bruise easily.
You can expect some discomfort as your blood is drawn. After the test, rare side effects include:
- Excess bleeding
- Feeling faint or light-headed
Always notify your medical provider if you experience discomfort that seems out of the norm.
How to prepare for Ferritin Test?
If your blood sample is being tested only for ferritin, you can eat and drink normally before the test. If your blood sample will be used for additional tests, you may need to fast for a certain amount of time before the test. Your doctor will give you specific instructions.
What happens during Ferritin Test?
A healthcare professional may apply a band around your arm to make your veins more visible. After wiping your skin with an antiseptic swab, the provider inserts a small needle into your vein to obtain a sample.
What happens after Ferritin Test?
The blood sample is sent to a lab for analysis. You can return to your usual activities immediately.
If you have any questions about the Ferritin Test, please consult with your doctor to better understand your instructions.
Explanation of results
What do my results mean?
The normal range for blood ferritin is:
- For men, 20 to 500 nanograms per milliliter
- For women, 20 to 200 nanograms per milliliter
A lower than normal ferritin level indicates that you have iron deficiency. You may also be anemic. If your ferritin level is low, your doctor will work to determine the cause.
A higher than normal ferritin level can be caused by:
- Hemochromatosis — A condition that causes your body to absorb too much iron from the food you eat
- Porphyria — A group of disorders caused by an enzyme deficiency that affects your nervous system and skin
- Rheumatoid arthritis or another chronic inflammatory disorder
- Liver disease
- Hodgkin’s lymphoma
- Multiple blood transfusions
- Alcohol abuse
If your ferritin level is above normal, your doctor may need to evaluate the results along with those of other tests to determine next steps.
For specifics about what your ferritin test results mean, talk to your doctor.
Depending on the laboratory and hospital, the normal range for Ferritin Test may vary. Please discuss with your doctor any questions you may have about your test results.
Hello Health Group does not provide medical advice, diagnosis or treatment.
Ferritin test. https://www.mayoclinic.org/tests-procedures/ferritin-test/about/pac-20384928. Accessed October 17, 2018.
Ferritin Level Blood Test. https://www.healthline.com/health/ferritin#ferritin. Accessed October 17, 2018.
Review Date: November 4, 2018 | Last Modified: September 12, 2019