Lead (Blood) levels: what's normal, high and low
Lead level in the blood. The CDC reference value for adults is <3.5 mcg/dL; any detectable level is a concern over time.
Medically reviewed by Youmna DiStefano, MD · Last reviewed September 2026
The short answer
Lead (Blood) is measured with a standard blood draw; no fasting is needed. A typical reference range is 0.000 – 3.50 mcg/dL. At TestWell it's $84.99 all-in as Heavy Metals Panel (Basic), results in 5–7 business days, drawn at Quest or Labcorp. An out-of-range result is a prompt to look closer, not a diagnosis.
- Units
- mcg/dL / ug/dL
- Sample
- Blood draw
- Fasting
- Not required
- Results
- 5–7 business days
- Price
- $84.99
- Labs
- Quest or Labcorp
Lead (Blood) Reference Range
These are the typical adult reference ranges used by major US labs. Your report will include the specific range used by the lab that processed your sample.
| Population | Range |
|---|---|
| age 18+ | 0.000 – 3.50 mcg/dL |
Reference ranges are educational. Always interpret your result with the specific range printed on your lab report and discuss anything outside the range with a clinician.
Have a result in hand? analyze it with your AI assistant using these reviewed ranges, or run it through our explainer. Tools: look up another marker's range · convert lab units
What your Lead (Blood) result may mean
Often reflects occupational, environmental, or hobby exposure (old paint, plumbing, certain ceramics).
What a high Lead (Blood) means: causes, symptoms, next steps ↓Educational only — not a diagnosis. Many factors can influence a single result. Discuss anything that concerns you with a healthcare provider.
What does a high Lead (Blood) mean?
There is no safe blood lead level; the reference value of 3.5 mcg/dL marks the top few percent of US adults. Elevated lead in adults comes from work (construction, battery, radiator and firing-range exposure), renovating pre-1978 homes, hobbies (stained glass, bullet casting, some pottery glazes), imported spices, cosmetics and traditional remedies, and old plumbing. It accumulates in bone and affects blood pressure, kidneys, nerves and, in pregnancy, the fetus.
Common causes of a high Lead (Blood)
- Occupational exposure: construction, demolition, battery or radiator work, firing ranges, smelting
- Renovation of pre-1978 housing; lead paint dust
- Hobbies: stained glass, casting bullets or sinkers, ceramics glazes
- Imported spices, cosmetics (kohl, sindoor), traditional remedies, some glazed pottery
- Old lead pipes or solder; contaminated water
- Retained bullet fragments
Ordered from most to least common.
Symptoms that can go with it
- Often none
- Fatigue, irritability, headache, abdominal pain, constipation, joint and muscle pain
- Memory and concentration problems, high blood pressure, reduced fertility; anemia at higher levels
What clinicians usually check next
- Find and stop the source — occupational medicine or health department can help
- Repeat in 1–3 months; CBC, kidney function, blood pressure
- Levels above 20 in adults need medical follow-up; above 40, removal from exposure; chelation only at very high levels under specialist care
- Test household children if a home source is suspected
Follow-up tests at TestWell: CBC with Differential ($21.99).
Seek care promptly if
- Blood lead above ~70 mcg/dL, or any elevation with confusion, seizures or severe abdominal pain — emergency care
What is a normal blood lead level for adults?
The lower the better; under 3.5 mcg/dL is the current reference value. OSHA requires action for workers at 40, and most clinicians act on anything above 5–10 by finding the source.
Educational only — not a diagnosis. A single result outside the range is a prompt to look closer with a clinician.
How do you get a Lead (Blood) test?
Order online, a licensed physician reviews the requisition, and you walk into a nearby lab for the draw. Lead (Blood) is available on its own or inside these panels — panels cost less per marker when you want the fuller picture.
| Option | Includes | Price |
|---|---|---|
| Heavy Metals Panel (Basic) | This marker only | $84.99 |
| Men's Superpowers Panel | 36 tests | $649.99 |
| Environmental Toxins Panel | 4 tests | $1049.99 |
Quest vs. Labcorp for Lead (Blood): which lab should you pick?
Both are CLIA-certified national labs and the result is clinically equivalent, so pick whichever location is closer. Your report will print that lab's own reference range, which can differ slightly from the table above.
| Lab | Available | Price |
|---|---|---|
| Quest Diagnostics | Yes | $84.99 |
| Labcorp | Yes | $84.99 |
| BioReference (NY & NJ) | No | — |
Need help choosing a location? Use the lab finder to see draw sites near your ZIP.
Frequently asked
What does a high Lead (Blood) mean?
There is no safe blood lead level; the reference value of 3.5 mcg/dL marks the top few percent of US adults. Elevated lead in adults comes from work (construction, battery, radiator and firing-range exposure), renovating pre-1978 homes, hobbies (stained glass, bullet casting, some pottery glazes), imported spices, cosmetics and traditional remedies, and old plumbing. It accumulates in bone and affects blood pressure, kidneys, nerves and, in pregnancy, the fetus.
What is a normal blood lead level for adults?
The lower the better; under 3.5 mcg/dL is the current reference value. OSHA requires action for workers at 40, and most clinicians act on anything above 5–10 by finding the source.
Do I need a doctor's order to test my lead (blood)?
No. TestWell's licensed physician network reviews and approves your order — usually within minutes. You can place an order online without an in-person visit or a referral from your own doctor.
How long does it take to get Lead (Blood) results?
Most Lead (Blood) results are available in 1–3 business days after your specimen arrives at the lab. You'll get an email the moment your results are ready, with everything viewable in your TestWell portal.
How much does a Lead (Blood) test cost?
Our Heavy Metals Panel (Basic) starts at $84.99. That's the all-in price — no copays, no insurance hoops, no surprise bills. HSA and FSA cards are accepted.
Do I need to fast before my Lead (Blood) test?
Fasting is not required for the Lead (Blood) test. You can have your blood drawn any time of day.
Which lab will process my Lead (Blood) test?
Your test will be processed by Quest Diagnostics, Labcorp, or BioReference depending on which is closest to you and which lab carries the test. All three are CLIA-certified and trusted by hospitals nationwide. You'll choose your lab during checkout from 4,000+ locations.
Ready to test your lead (blood)?
Order in two minutes, get physician-approved, and visit a lab the same day. Starts at $84.99.