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Lead in Muscle Tissue (Mass Concentration)

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

This test measures the amount of lead present in your muscle tissue, which can help assess exposure to lead over time.

Quick summary

["Muscle lead levels help identify chronic lead exposure beyond what blood tests alone can detect."]

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

Key facts at a glance

LOINC
108619-8
Short code
Lead Msmt Tiss
Synonyms
Lead Msmt Tiss
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
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 healthcare provider may recommend this test if you have symptoms of chronic lead poisoning (e.g., fatigue, muscle weakness) or if blood lead levels are persistently elevated despite treatment. It’s also used in cases where lead exposure is suspected but blood tests alone don’t confirm it.

What to Expect Before the Test

No special preparation is needed. You may be asked to fast for a few hours before the test, but this depends on the specific procedure. Your doctor will guide you on any restrictions.

How the Test Is Performed

A small sample of muscle tissue may be obtained through a procedure called a biopsy, where a tiny piece is taken from your muscle. This is usually done under local anesthesia to minimize discomfort. The sample is then sent to a lab for analysis.

What the Results Mean

Results show the mass concentration of lead in your muscle tissue. Higher levels may indicate long-term exposure to lead, which can affect your nervous system, kidneys, and other organs. Your doctor will interpret the results in the context of your overall health and symptoms.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Lead in Muscle Tissue

Frequently asked questions

What does elevated lead in muscle tissue mean?
Elevated lead levels in muscle tissue suggest chronic exposure to lead, which can accumulate in the body over time. Unlike blood lead, muscle lead reflects long-term exposure and may indicate persistent or ongoing exposure, even if blood levels are lower. This test is particularly useful for monitoring people at high risk (e.g., workers in lead industries, children with developmental delays, or individuals with kidney issues).
How often should I get this test?
Your doctor will determine how often you need this test based on your medical history, symptoms, and risk factors. If you’ve had chronic lead exposure or ongoing symptoms, follow-up may be scheduled every few months or annually, depending on your situation.
Can lead in muscle tissue be lowered?
Yes, lead exposure can be reduced with lifestyle changes, such as avoiding lead-containing products, improving diet (e.g., more calcium, iron, and vitamin C), and following medical treatments like chelation therapy if prescribed. Muscle lead levels may take time to decrease, so consistent monitoring is important.
  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