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Lead in Serum (Mass Concentration)

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

This test measures the amount of lead in your blood, which can help detect exposure to this heavy metal that may harm your body.

Quick summary

["Lead exposure can cause serious health risks, especially in children."]

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

Key facts at a glance

LOINC
104850-3
Short code
Lead IgE Qn
Synonyms
Lead IgE Qn
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 Is This Test Done?

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

What to Expect Before the Test

No special preparation is needed. You’ll provide a blood sample, usually drawn from your arm. If you’re a child, the process is quick and painless, and you may be offered a small reward or distraction to ease discomfort.

What the Results Mean

Results are compared to standard reference ranges, but exact values depend on lab methods. High levels may indicate exposure, while low levels are typical in healthy individuals. Follow-up may include further testing or steps to reduce exposure.

Common Causes of Elevated Lead Levels

Lead can come from contaminated food, water, dust, or environmental sources like old paint or pipes. Occupational exposure (e.g., construction, battery recycling) or living in areas with poor infrastructure may also raise risk.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Lead Level (Serum)

Frequently asked questions

What if my lead level is high?
If your results are elevated, your doctor will discuss next steps, such as reducing exposure, dietary changes, or medications to lower lead levels. They may also recommend follow-up tests to monitor progress.
How can I protect myself from lead?
Avoid known sources of lead (e.g., old paint, lead pipes). Use water filters if your home has lead-contaminated water. For children, ensure proper nutrition (iron, calcium) and regular check-ups. If you work in high-risk jobs, follow safety protocols.
Is this test painful?
The blood draw is quick and may cause mild discomfort, but it’s not usually severe. Children may feel a brief pinch, but most tolerate it well. If you’re anxious, let your healthcare provider know to prepare you beforehand.
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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