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Lead in Red Blood Cells (Mass Concentration)

Published: August 9, 2026Updated: August 17, 2026

This test measures the amount of lead found in your red blood cells, which can help identify exposure to lead over time.

Quick summary

["Lead exposure may affect your health, especially in children and pregnant individuals."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 17, 2026Editorial policy

Key facts at a glance

LOINC
5674-7
Short code
Lead RBC-mCnc
Synonyms
Lead RBC-mCnc
Category
chemistry
Sample
whole-blood
Container
Lavender-top (EDTA)
Units
N/A
Ref low
4.2
Ref high
5.9
Critical range
2 N/A – 7 N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
CPT
85041
SNOMED
900000000000003001
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 (such as fatigue, headaches, or behavioral changes), live in an area with high lead exposure, or have been exposed to lead through work, hobbies, or household items (e.g., old paint, contaminated water). Children are tested more often due to higher sensitivity to lead’s effects on development.

What to Expect Before the Test

No special preparation is needed. You may have a blood draw from a vein in your arm, similar to other blood tests. The process is quick and usually painless.

How the Results Are Used

Results help determine if lead exposure is present and guide treatment or prevention strategies, such as reducing exposure or monitoring further.

Common Causes of Lead Exposure

Lead can come from contaminated dust, old paint, leaded gasoline, certain hobbies (e.g., soldering), or water systems with lead pipes. Symptoms may not appear immediately but can worsen over time.

Reference range

Adult males: 4.2-5.9; Females: 3.8-5.1 x 10^12/LN/A

Specimen: whole-blood

No special preparation required. Stay well hydrated.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

This test is critical for early detection, especially in vulnerable groups like children and pregnant individuals. High levels may require medical intervention to lower exposure and support health.

Short name

Red Blood Cell Lead Level

Frequently asked questions

What does a high or low result mean?
A high result suggests possible lead exposure, which may need further evaluation or treatment to reduce exposure risks. A low result means no significant lead was detected in this sample, but ongoing monitoring may still be advised if exposure is suspected.
How often should I get this test?
Your healthcare provider will decide based on your risk factors (e.g., age, occupation, living environment). Children may get repeated tests if they have high-risk factors, while adults may only need it if symptoms or exposure concerns arise.
Can I prevent lead exposure at home?
Yes! Remove peeling paint, use lead-safe cleaning products, test your water, and avoid lead-containing hobbies or tools. If you suspect exposure, contact your healthcare provider or local health department for guidance.
  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 17, 2026. · Read our editorial policy