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Lead Blood Mass Concentration (Serum/Plasma)

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

This test measures the amount of lead in your blood, an important marker for exposure to this heavy metal, which can affect the nervous system and other organs.

Quick summary

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

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

Key facts at a glance

LOINC
5671-3
Short code
Lead Bld-mCnc
Synonyms
Lead Bld-mCnc
Category
chemistry
Sample
whole-blood
Container
Lavender-top (EDTA)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Specimen volume
3 mL
Stability
Room temperature: 4h, Refrigerated: 24h
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 fatigue, headaches, or neurological issues, or if you’ve been exposed to lead (e.g., from contaminated water, paint, or workplace hazards). Children with developmental delays or frequent stomachaches may also be tested. Pregnant individuals or those with high-risk jobs (e.g., construction) may also need this test to monitor lead levels.

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 can resume normal activities afterward.

What the Results Mean

Higher-than-normal lead levels may indicate exposure to lead sources. Your doctor will discuss results with you and may recommend steps to reduce exposure or further testing.

Common Causes of Elevated Lead Levels

Lead can come from old paint, dust, contaminated food/water, or certain industrial environments. Children are more vulnerable due to higher absorption rates and developing nervous systems.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Lead Level (Serum/Plasma)

Frequently asked questions

What triggers this test?
Your doctor may order it if you have symptoms of lead poisoning, live in an area with known lead contamination, or work in a high-risk occupation. Children with developmental concerns or frequent illnesses may also be tested.
How is lead exposure prevented?
Wash hands and surfaces frequently, avoid lead-containing products (e.g., old paint), and use lead-safe practices in homes. If you suspect exposure, consult your doctor for guidance.
Can lead levels be lowered naturally?
Yes, reducing exposure is key. Diet rich in calcium, iron, and vitamin D may help bind lead in the body. Avoiding lead sources and following medical advice can also lower levels over time.
  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