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Guided venous blood lead concentration (substance concentration) in plasma

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

This test measures the amount of lead in your blood drawn from a vein. Lead is a heavy metal that can harm your body, especially in children and pregnant people.

Quick summary

["Lead exposure can cause serious health problems, so monitoring is important for safety and early detection."]

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

Key facts at a glance

LOINC
26307-9
Short code
Guided Vein-Bl LB CVC place
Synonyms
Guided Vein-Bl LB CVC place
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
imaging-modality
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’ve been exposed to lead (e.g., from paint, dust, or industrial sources), if you live in an area with high lead levels, or if you have symptoms like fatigue, headaches, or developmental delays in children. It can also be part of routine screening for certain groups at higher risk.

What to Expect Before the Test

You’ll likely have a small needle inserted into your arm to draw blood. It usually takes a few minutes. If you’re pregnant, breastfeeding, or have a history of lead exposure, let your provider know before the test.

What Happens During the Test?

The blood sample is collected in a tube and sent to a lab for analysis. Lead levels are measured in micrograms per deciliter (µg/dL). Results help determine if further action is needed, such as reducing exposure or treatment.

What Are Possible Results?

Results are interpreted by your healthcare provider based on your health history and symptoms. High levels may trigger follow-up steps, including additional testing or environmental assessments.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Lead Level (Plasma)

Frequently asked questions

Why might my lead level be checked regularly?
If you’ve had repeated exposure to lead (e.g., from work, home environment, or medical procedures), your provider may recommend regular monitoring to track changes in your blood levels and prevent harm.
What should I do if my lead level is higher than expected?
Your provider will guide you on reducing exposure (e.g., avoiding lead-containing products, improving ventilation) and may recommend follow-up tests or treatments if needed. Never self-treat—always follow their advice.
Can lead levels be affected by diet or medications?
Dietary factors (e.g., calcium, vitamin D) or certain medications (e.g., chelating agents) may influence lead levels, but results are interpreted based on your overall health. Your provider will consider these factors when discussing your 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