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Lead Blood Mass Concentration (Serum or Plasma)

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

This test measures the amount of lead in your blood, which can help identify exposure to lead, a heavy metal that may cause health problems, especially in children.

Quick summary

["Lead exposure can harm your body, particularly in kids; this test helps track potential risks."]

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

Key facts at a glance

LOINC
10368-9
Short code
Lead BldC-mCnc
Synonyms
Lead BldC-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 of lead poisoning (e.g., fatigue, abdominal pain, or developmental delays in children), live in an area with known lead contamination, or have occupational exposure to lead. It may also be part of routine screening for high-risk groups, such as children in certain environments or individuals with certain medical conditions.

What to Expect Before the Test

No special preparation is usually needed. You may have a small needle inserted into your arm to draw blood. If you’re a child, the process is usually quick and painless, and you can expect to feel a brief pinch. Avoid eating or drinking for a short time before the test if instructed.

What to Expect During the Test

The blood sample is collected from a vein in your arm. A healthcare professional will clean the area, insert a needle, and gently draw blood into a tube. The process takes about 5 minutes. You may feel a slight sting, but most people tolerate it well.

What to Expect After the Test

After the blood is drawn, the needle is removed, and a bandage is applied. You may experience mild bruising or soreness at the site, which usually goes away within a few days. Drink plenty of fluids to help your body process the blood sample.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Lead Level (Serum/Plasma)

Frequently asked questions

How long does it take to get my results?
Results are typically available within 1 to 3 business days, depending on your lab and healthcare provider. You’ll be contacted by your provider once they have the results.
What does a high or low lead level mean?
A high lead level suggests possible exposure that may need further investigation or treatment. A low level may indicate no immediate concern, but ongoing exposure should still be monitored. Your healthcare provider will interpret the results in the context of your overall health and symptoms.
Can I eat or drink before the test?
Generally, no special diet is required, but avoid eating or drinking for about 1 hour before the test if instructed by your provider to ensure accurate results.
  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