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Lead Exposure Screening (Recency) – Substance Concentration in Serum/Plasma

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

This test measures recent blood levels of lead, a heavy metal that can harm the body, especially in children. It helps determine if you’ve been exposed to lead in the past few weeks.

Quick summary

["This screening helps identify recent lead exposure, which may require follow-up or intervention."]

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

Key facts at a glance

LOINC
39196-1
Short code
LEADEXPOSURETOSCREENFINDINGRECENCY
Synonyms
—
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
cphs
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 This Test Is Done

Your healthcare provider may order this test if you’ve had recent exposure to lead (e.g., from paint, contaminated food, or environmental sources) or if you live in an area with known lead risks. It’s also used in monitoring children for lead poisoning or after potential exposure events.

What to Expect Before the Test

No special preparation is needed. You’ll provide a blood sample, usually drawn from a vein in your arm. The test is quick and typically done in a lab setting.

What the Results Mean

Higher-than-normal levels may indicate recent exposure, which could affect your health. Your provider will discuss results with you and may recommend further testing or steps to reduce exposure.

Common Causes of Lead Exposure

Lead can enter the body through ingestion (e.g., contaminated food/water) or inhalation (e.g., dust, fumes). Common sources include old paint, lead-based products, or environmental contamination.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Lead Exposure Screening (Recency)

Frequently asked questions

How long does it take to get results from this test?
Results are usually available within 1–3 business days, depending on lab processing times. Your provider will contact you once they’re ready.
Can I eat or drink before this blood test?
You can eat and drink normally, but avoid alcohol before the test. No fasting is required.
What should I do if I have very high lead levels?
If results show elevated levels, follow your provider’s advice—this may include chelation therapy, reducing exposure, or additional testing to monitor your health.
  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