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Iron Hair Metal Content (Hair Iron Concentration)

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

This test measures the amount of iron naturally present in a small sample of your hair, often used to assess long-term iron status.

Quick summary

["Hair iron testing helps check if you’ve had enough iron over time, even if your blood tests don’t show current levels."]

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

Key facts at a glance

LOINC
50869-7
Short code
Iron Hair-sCnt
Synonyms
Iron Hair-sCnt
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 This Test Is Done

Your healthcare provider may order this test if you have symptoms like fatigue, pale skin, or unusual tiredness—even if blood tests for iron (like ferritin) seem normal. It can also help monitor iron levels in people with certain conditions, such as chronic diseases or those who’ve had blood transfusions.

What to Expect Before the Test

You’ll provide a small hair sample, usually from the back of your head. No special preparation is needed, but avoid dyeing or coloring your hair before the test.

How the Test Works

Hair is analyzed to measure iron content, which reflects your body’s iron stores over months. Unlike blood tests, this method doesn’t require fasting or special timing.

Possible Results and Next Steps

Results may indicate whether your iron stores are sufficient or low. If low, your provider may recommend dietary changes, supplements, or further blood tests to guide treatment.

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

Hair Iron Test

Frequently asked questions

Low hair iron levels can signal iron deficiency, even if your blood iron tests are normal. This test helps detect chronic iron depletion that might not show up in single blood draws.
If your hair iron is low, your doctor may suggest blood tests (like ferritin) to confirm and guide treatment, such as iron supplements or dietary adjustments.
How often should I get this test?
This test is typically done once or twice a year if you have ongoing iron-related symptoms or conditions. Your provider will determine the best timing based on your needs.
Can I eat or drink before this test?
No special diet or fasting is required for hair iron testing. Just avoid dyeing your hair before the sample is taken.
  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