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Iron (Serum) Concentration, Mass

Published: August 9, 2026Updated: August 17, 2026

This test measures the amount of iron present in your blood serum, which helps assess iron status and identify potential deficiencies or excesses.

Quick summary

["Iron levels help determine if you may have anemia or iron overload."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 17, 2026Editorial policy

Key facts at a glance

LOINC
51197-2
Short code
Iron Fld-mCnc
Synonyms
Iron Fld-mCnc
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Ref low
60
Ref high
170
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
CPT
83540
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 if you have symptoms like fatigue, weakness, pale skin, or unusual tiredness. It may also be used to monitor iron levels in people with conditions like anemia, hemochromatosis, or those taking iron supplements.

What Does a Low or High Iron Level Mean?

Low iron levels can indicate iron deficiency anemia, where your body doesn’t have enough healthy red blood cells. High iron levels may suggest conditions like hemochromatosis, where the body absorbs too much iron, or certain liver diseases.

How Is This Test Performed?

A blood sample is taken from a vein, usually in your arm. The sample is then sent to a lab where it is analyzed to measure iron concentration using a specialized technique.

What Are Common Causes of Abnormal Results?

Causes of low iron levels include poor diet, blood loss (such as from heavy periods or bleeding ulcers), pregnancy, or certain medications. Causes of high iron levels may include excessive iron intake, genetic conditions, or repeated blood transfusions.

Reference range

NCBI: Serum Iron Male 65-180; Female 50-170 µg/dLN/A

Specimen: serum

Fasting for 12 hours preferred. Iron supplements should be stopped 24 hours before if possible.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Serum Iron Level

Frequently asked questions

What does a normal range of iron mean?
A normal range for iron levels can vary slightly between labs and individuals. Your results will be compared to your specific lab’s reference values, which take into account factors like age, sex, and overall health. Your healthcare provider will interpret your results in the context of your medical history and symptoms.
How often should I get this test?
The frequency of this test depends on your health status and medical needs. If you have a known iron deficiency or iron overload, your doctor may recommend regular monitoring. Otherwise, it might be ordered only when symptoms or other test results suggest a need for evaluation.
Can diet or lifestyle changes affect iron test results?
Yes, diet and lifestyle can influence iron levels. Consuming foods rich in iron (like red meat, spinach, and fortified cereals) or certain supplements can temporarily increase iron levels. Conversely, foods high in vitamin C (like citrus fruits) can enhance iron absorption, while calcium-rich foods may reduce it. It’s best to discuss dietary adjustments with your healthcare provider.
  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 17, 2026. · Read our editorial policy