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Lead in Whole Blood (Mass Concentration)

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

This test measures the amount of lead present in your blood, which can help identify exposure to this heavy metal.

Quick summary

["Lead exposure may cause serious health issues, especially in children."]

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

Key facts at a glance

LOINC
30931-0
Short code
Lead ?Tm Ur-mCnc
Synonyms
Lead ?Tm Ur-mCnc
Category
chemistry
Sample
urine
Container
Sterile urine container
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Specimen volume
10 mL
Stability
Room temperature: 2h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

Why Is This Test Done?

Your healthcare provider may order this test if you have symptoms like headaches, fatigue, or behavioral changes, or if you’ve been exposed to lead (e.g., from paint, water, or certain jobs). Children are tested more often due to lead’s harmful effects on brain development.

What to Expect Before the Test

No special preparation is needed. You’ll have a small needle inserted into your arm to draw a small amount of blood. It usually takes a few minutes, and you may feel a brief pinch.

What the Results Mean

Higher-than-normal lead levels may indicate recent exposure. Very high levels can cause immediate health risks, while lower levels may require monitoring or lifestyle changes.

Common Causes of Lead Exposure

Lead can come from old paint, contaminated water, dust, or certain hobbies (e.g., soldering). Children may ingest lead from toys, food, or soil near lead sources.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Lead Blood Test

Frequently asked questions

How often should I get this test?
Your provider will determine how often you need testing based on your risk factors (e.g., age, occupation, living environment). Regular checks may be recommended if you’ve had past exposure or live in an area with known lead hazards.
What happens if my lead levels are high?
If levels are elevated, your doctor may recommend reducing exposure, dietary changes (e.g., more calcium or iron), or medications to bind lead in your body. Treatment depends on the cause and severity.
Can lead levels change quickly?
Yes, lead levels can fluctuate based on recent exposure. If you’ve been exposed recently, your levels may be higher than long-term averages. Follow-up tests can help track progress with treatment or exposure reduction.
  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