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Ferritin (Serum or Plasma) – Quantitative Measurement

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

This test measures the amount of ferritin, a protein that stores iron in your body, found in your blood serum or plasma.

Quick summary

["Ferritin helps assess iron stores and potential iron deficiency or overload."]

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

Key facts at a glance

LOINC
11647-5
Short code
Fet TV Peak E-wave DOP
Synonyms
Fet TV Peak E-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 a ferritin test to check for conditions like anemia (low red blood cells), iron deficiency, or iron overload disorders, such as hemochromatosis. It can also be used to monitor treatment for certain blood disorders or infections.

What Does a Low or High Ferritin Level Mean?

Low ferritin levels may indicate iron deficiency, which can cause fatigue, pale skin, or weakness. High ferritin levels might suggest chronic inflammation, liver disease, or excessive iron storage, which can be harmful over time.

Sample Collection and Preparation

A blood sample is drawn from a vein, usually in your arm. The blood is then separated to obtain serum or plasma for testing. Ferritin levels can be measured using various methods, including immunoassay or nephelometry, depending on the lab’s protocol.

Common Conditions Monitored

Ferritin is commonly checked in patients with suspected anemia, chronic diseases (like kidney disease or inflammatory conditions), or those with a history of excessive blood loss or iron supplements.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Serum Ferritin

Frequently asked questions

What Are My Results Likely To Mean?
Results are interpreted in relation to your overall health, symptoms, and medical history. While ferritin alone doesn’t diagnose a condition, it often guides further testing or treatment plans, such as blood transfusions for iron deficiency or dietary adjustments for iron overload.
How Often Should I Get This Test?
The frequency depends on your medical needs. Your doctor may recommend regular testing if you have conditions like hemochromatosis, frequent blood donations, or ongoing symptoms like fatigue or weakness.
Can Ferritin Levels Change with Diet or Exercise?
Yes, diet (especially iron-rich foods) and certain medications (like blood thinners or iron supplements) can affect ferritin levels. Exercise alone typically doesn’t change ferritin levels significantly unless it leads to blood loss (e.g., heavy menstrual periods or intense training).
  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