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Ferritin, Serum or Plasma (Mass Concentration)

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

Ferritin is a protein that stores iron in your body. Your blood test measures the amount of ferritin in your serum or plasma to assess iron stores.

Quick summary

["This test helps check for iron deficiency or iron overload."]

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

Key facts at a glance

LOINC
11643-4
Short code
Fet TV Peak A-wave DOP
Synonyms
Fet TV Peak A-wave DOP
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
us-doppler
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 Is This Test Done?

Your healthcare provider may order this test to evaluate iron levels, diagnose conditions like anemia, or check for iron overload in conditions such as hemochromatosis. It can also be used during pregnancy, before surgery, or if you have symptoms like fatigue, weakness, or unusual fatigue.

What Does a High or Low Ferritin Level Mean?

High ferritin levels may indicate chronic inflammation, certain cancers, or iron overload disorders. Low ferritin levels often suggest iron deficiency, which can lead to anemia or other health issues.

Common Conditions Affecting Ferritin Levels

Conditions such as chronic kidney disease, liver disease, or autoimmune disorders can influence ferritin levels. Certain medications or dietary factors may also affect iron absorption and storage.

Sample Collection and Preparation

For this test, a blood sample is drawn from a vein in your arm. The blood is then separated into serum (liquid part without clots) or plasma (liquid part with clots) for analysis. Avoid eating or drinking anything (except water) for a few hours before the test.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Serum/Plasma Ferritin

Frequently asked questions

What Are the Normal Ferritin Levels?
Normal ferritin levels can vary based on age, sex, and overall health. Your healthcare provider will interpret the results in relation to your specific situation and medical history.
How Often Should I Get This Test?
The frequency of this test depends on your health condition and medical needs. Your healthcare provider will determine the best schedule for you, such as annually or as needed for monitoring.
Can I Take Anything Before the Test?
Yes, you should avoid eating or drinking anything (except water) for a few hours before your blood draw to ensure accurate results. Follow your healthcare provider’s specific instructions.
  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