Skip to content

Serum Ferritin (Mass Concentration)

Published: August 9, 2026Updated: August 16, 2026

Ferritin is a protein in your blood that stores iron. It helps your body measure how much iron is available for use, especially important for cells that need iron to function properly.

Quick summary

["This test helps check for iron deficiency or iron overload, which can affect energy levels and other health conditions."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
30871-8
Short code
MRA Fem ves
Synonyms
MRA Fem ves
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
mr-angio
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

Why This Test Might Be Ordered

Your doctor may order a ferritin test if you have symptoms like fatigue, weakness, or pale skin, which could indicate low iron levels. It may also be checked before certain treatments, such as chemotherapy, or if you have conditions like anemia or liver disease.

What to Expect Before the Test

No special preparation is usually needed, but you might be asked to fast for 8–12 hours before the test if it’s part of a broader metabolic panel. Bring any medications you’re currently taking to your appointment.

What the Test Involves

A small needle will be used to draw blood from a vein in your arm. The process is quick and typically causes only mild discomfort. The blood sample will be sent to a lab for analysis.

What the Results Mean

Results can vary based on age, sex, and overall health. Low ferritin levels may suggest iron deficiency, while very high levels could indicate conditions like hemochromatosis or chronic inflammation. Your doctor will interpret the results in the context of your medical history.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Ferritin

Frequently asked questions

How often do I need this test?
Ferritin levels are often checked periodically if you have a history of iron-related conditions, such as anemia or liver disease. Your doctor will determine how often you need retests based on your specific situation and symptoms.
Can diet affect ferritin test results?
Diet can influence iron levels, but ferritin itself is stored iron, so diet changes may take time to affect results. Avoiding large iron supplements or high-iron foods for a few days before testing can help ensure accurate results.
What if my ferritin level is out of range?
If your ferritin level is low, your doctor may recommend dietary changes, iron supplements, or further testing to check for underlying causes like blood loss or malabsorption. If it’s high, they may investigate conditions like genetic disorders or chronic inflammation.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy