Lead (Blood) Concentration, Mass Concentration
This test measures the amount of lead present in your blood, which can indicate exposure to lead over time.
["Blood lead levels help identify potential lead poisoning or exposure risks."]
Key facts at a glance
- LOINC
- 74250-2
- Short code
- HEDIS 2014-15 Lead
- Synonyms
- HEDIS 2014-15 Lead
- 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 of lead poisoning (such as abdominal pain, fatigue, or neurological issues), live in an area with known lead contamination, or have occupational exposure to lead. Children, pregnant women, and those with certain health conditions may also be at higher risk and tested more frequently.
What Does a High or Low Level Mean?
High blood lead levels can indicate exposure to lead, which may harm your body’s organs, especially in children. Low levels may not show symptoms but can still pose risks over time. Results are interpreted by your healthcare provider based on your medical history and symptoms.
Sample Collection and Preparation
A small blood sample is drawn from a vein in your arm. The blood is processed and analyzed in a lab to measure lead concentration. This test is typically done as part of a routine screening or after exposure concerns.
What to Expect Before the Test
No special preparation is needed, but inform your provider about any medications, supplements, or recent illnesses that could affect results. Avoid eating or drinking anything (except water) for 1–2 hours before the test if instructed.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
Blood Lead Level
Frequently asked questions
Lead is a toxic metal that can accumulate in the body over time and cause serious health problems, particularly in children. Chronic exposure may lead to developmental delays, learning difficulties, or organ damage. Acute exposure can cause immediate symptoms like nausea, vomiting, or seizures.
A normal result means your blood lead level is within expected limits for your age and health status. However, even slightly elevated levels can be concerning, so follow-up may be recommended.
Your healthcare provider will determine how often you need testing based on your exposure risk, age, and medical history. Children and high-risk groups may need testing every 6 months or more frequently.
Sources
- 1
- 2Lab Tests OnlineSource
- 3
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.
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