Tag: Pregnancy

Lead Poisoning in Pregnancy: Risks, Sources and Breastfeeding

Lead poisoning in pregnancy matters because lead in the mother’s blood reaches the baby: the CDC says lead readily crosses the placenta, and lead stored in the mother’s bones can be released into the blood during pregnancy. Most people with lead exposure feel nothing, so the way to find it is a blood lead test, ordered by your health care provider when your history shows a risk.

Mother holding her swaddled newborn by a sunny window

In short: the CDC says lead in the blood during pregnancy can increase the risk for miscarriage, cause the baby to be born too early or too small, hurt the baby’s brain, kidneys and nervous system, and cause the child to have learning or behavior problems. Common sources include eating clay or soil (pica), imported remedies, cosmetics and spices, lead-glazed pottery, renovation of pre-1978 homes, and lead dust brought home from a household member’s job. The CDC recommends a risk check at the first prenatal visit and a blood test if any risk is found, and it says mothers below 40 µg/dL should breastfeed.

This guide explains what the CDC, the World Health Organization (WHO) and the FDA say. It is not medical advice. Your prenatal care provider decides whether you need a test and what a result means. For urgent questions about a possible poisoning, call Poison Control at 1-800-222-1222.

How lead reaches the baby

The WHO explains that lead is stored in the teeth and bones, where it builds up over time. That stored lead is why pregnancy is a special case.

Through the placenta. The CDC’s 2010 Guidelines for the Identification and Management of Lead Exposure in Pregnant and Lactating Women say lead crosses the placenta by passive diffusion and has been measured in the fetal brain as early as the end of the first trimester. That is why the guidelines call preventing exposure “particularly important.”
From the mother’s own bones. The CDC pregnancy page says lead stored in adults’ bones can be released into the blood during pregnancy, so blood lead levels can rise. The WHO says the same: bone lead released during pregnancy “becomes a source of exposure to the developing fetus.” Past exposure, even years before, can matter.
After birth, through breast milk. The CDC says mothers can also expose infants to lead through breast milk (see breastfeeding below).

What lead exposure during pregnancy can do

The CDC’s “Risk Factors and Pregnancy” page lists four effects of lead in the blood during pregnancy. In its words, lead can:

Increase risk for miscarriage
Cause the baby to be born too early or too small
Hurt the baby’s brain, kidneys, and nervous system
Cause the child to have learning or behavior problems

The WHO fact sheet on lead says lead exposure during pregnancy “can cause reduced fetal growth and preterm birth,” and that there is no level of exposure to lead known to be without harmful effects.

The 2010 CDC guidelines add detail: studies link prenatal exposure, even with maternal levels below 10 µg/dL, to lower fetal growth and neurodevelopment; lead has been associated with high blood pressure in pregnancy; and the evidence on miscarriage and preterm delivery is more limited and mixed. The CDC has not named any blood lead level as safe for mother or baby. For the long-term picture, see effects of lead poisoning.

Common sources of lead for pregnant people

The 2010 guidelines name the groups most likely to be exposed: workers in certain jobs, recent immigrants, and people with habits such as pica or renovating older homes.

Pica: eating clay, soil and other non-food items

Some pregnant people feel an urge to eat clay, soil, plaster or paint chips. The CDC guidelines advise never eating or mouthing non-food items because they may contain lead, and note that pica is common in many parts of Africa, Asia and Central America. Tell your provider: it is a recognized risk factor, not a judgment.

Imported remedies, cosmetics, spices and candies

The guidelines advise avoiding imported cosmetics, food additives and medicines that may contain lead, such as azarcon, kohl, kajal and surma, and using caution with candies, spices and foods brought from abroad. The FDA warns that kohl can cause lead poisoning and advises asking a provider to test pregnant or nursing women who used it; it has also cautioned about some Ayurvedic products and issued alerts on ground cinnamon. Our guide to lead in cinnamon and spices lists the FDA alerts.

Pottery, crystal and metal cookware

The CDC guidelines advise against using imported lead-glazed pottery, pewter or brass for food, leaded crystal for drinks, and chipped or cracked dishes. The FDA says some traditional pottery labeled “lead free” still released lead, and in December 2024 it warned that certain imported aluminum, brass and Hindalium cookware can leach lead. See lead in pottery and dishes.

Renovation and old paint

The guidelines say to stay away from repair, repainting, renovation and remodeling work in homes built before 1978 and to avoid deteriorated lead paint. Work should be done by others using lead-safe renovation (RRP) practices while you are out of the home.

Jobs and hobbies, yours or a household member’s

The guidelines advise avoiding jobs or hobbies involving lead and guarding against take-home lead dust if a household member works with lead, such as in pre-1978 renovation or lead battery making or recycling. Dust carried home on clothes, shoes or skin settles in the car and home. Pregnant women at 10 µg/dL or higher should be removed from work exposure to lead. Our guide to lead testing for adults covers the jobs on the CDC list and the NIOSH advice for workers.

Concerns at a glance

Concern	What CDC / WHO say	What you can do
Lead reaching the baby	Lead crosses the placenta; bone lead can be released into the blood during pregnancy (CDC, WHO)	Tell your provider about any past or present exposure, even years ago
Pregnancy outcomes	Can increase risk for miscarriage and cause the baby to be born too early or too small (CDC); reduced fetal growth and preterm birth (WHO)	Ask about a lead risk assessment at your first prenatal visit
Pica	Never eat or mouth clay, soil, pottery or paint chips (CDC 2010)	Mention any cravings for non-food items to your provider
Imported remedies, cosmetics, spices	Avoid imported products that may contain lead, such as azarcon, kohl, kajal, surma (CDC 2010); kohl can cause lead poisoning (FDA)	Stop using the product and bring it to your appointment
Renovation	Stay away from renovation in homes built before 1978 (CDC 2010)	Let others do the work lead-safely while you are away
Take-home dust	Take precautions if a household member works with lead (CDC 2010)	Work clothes and shoes stay at work or are washed separately
Nutrition	Eat a balanced diet with adequate iron and calcium (CDC 2010); “a diet high in iron and calcium” (CDC)	Ask your provider before taking any supplement

How to lower lead exposure during pregnancy

The CDC puts it simply: the best way to prevent lead in the blood is to prevent lead exposure. Based on the CDC guidelines and pregnancy page:

Keep lead dust out. Stay away from renovation in pre-1978 homes. Work clothes and shoes of household members who work with lead stay out of the living space. The CDC advises wet-mopping floors and other flat surfaces.
Skip imported remedies, cosmetics, unlabeled foods and lead-glazed pottery, and check FDA alerts for spices you already have.
Eat well. The guidelines say to eat a balanced diet with adequate intakes of iron and calcium and to avoid cigarettes and alcohol. The CDC pregnancy page says doctors may suggest “eating a diet high in iron and calcium.” Do not start supplements on your own, and never use products sold to “remove lead.”
Check your home. Our free home lead risk checker walks you through the usual sources room by room.

Testing during pregnancy

The CDC does not recommend testing all pregnant women in the US. Instead, providers are asked to look for risk factors as part of your work, home and lifestyle history, at the earliest prenatal contact, and to order a venous blood lead test if even one risk factor is found. Clinics that serve communities with known risks may test everyone. The CDC pregnancy page adds that if you think you may have been exposed, you should talk to your provider about a blood lead test.

A sample questionnaire reprinted in the guidelines (Minnesota Department of Health) asks about lead jobs or hobbies at home, eating clay, soil, plaster or paint chips, dusty renovation in a pre-1978 home, high lead in your water, folk remedies or cosmetics not sold in regular stores, and homemade pottery or leaded crystal.

At 5 µg/dL or higher, the guidelines recommend follow-up testing, a search for the source and testing of the newborn. Our guide to blood lead levels has the CDC schedule and explains the units, and lead testing for adults covers who should ask. Home kits do not test people; they check paint, dust, soil or water (see lead poisoning test).

Lead and breastfeeding

Lead can pass into breast milk, but the CDC still calls breast milk the most complete and ideal food for infants in their first year. Its guidance, from the 2010 guidelines and the current CDC breastfeeding page:

Below 40 µg/dL: mothers should breastfeed. The CDC page says women with levels of 5 µg/dL up to below 40 can breastfeed, while their providers watch the baby’s levels.
40 µg/dL or higher (confirmed): pump and discard breast milk until the mother’s level drops below 40, then begin breastfeeding.
Testing breast milk for lead is not recommended. The blood test is what guides decisions.
If the baby’s level rises or does not come down, providers look for other sources first. Only if none is found, and the mother’s level is above 20 µg/dL with the baby at 5 µg/dL or higher, may a temporary pause be considered.

For formula that needs mixing, the guidelines say to use water only from the cold tap, flushed for at least 3 minutes, or bottled or filtered water known to be free of lead. More on water at lead in water testing.

What to ask your provider

Based on my job, home, hobbies and the products I use, do I have a risk factor for lead? Should I have a blood lead test?
I had lead exposure in the past (or I grew up or lived abroad). Could stored lead matter in this pregnancy?
If my level is 5 µg/dL or higher, when will you retest, and will the baby be tested at birth?
Is there anything about my diet I should change? Should I take any supplement, or avoid one?
What does my level mean for breastfeeding?

Bring any imported remedy, cosmetic or spice you use to the appointment. For more on lead and health, start at our lead poisoning hub.

Frequently asked questions

Can lead pass from mother to baby during pregnancy?

Yes. The CDC’s 2010 guidelines say lead readily crosses the placenta, and both the CDC and the WHO say lead stored in the mother’s bones can be released into the blood during pregnancy and reach the baby.

Should every pregnant woman get a lead test?

The CDC does not recommend testing everyone. It recommends a risk assessment at the first prenatal contact and a blood lead test if any single risk factor is found. If you think you were exposed, ask your provider.

Is there lead in breast milk?

It can, but the CDC says mothers below 40 µg/dL should breastfeed; at 40 or higher, pump and discard until the level drops below 40. Testing breast milk is not recommended.

Why does my provider ask if I eat clay or dirt?

Eating non-food items such as clay, soil, plaster or paint chips (pica) is a known source of lead in pregnancy, and it is on the CDC’s list of risk factors. A “yes” usually means a blood lead test, which helps protect you and the baby.

October 10, 2026

Lead Testing for Adults: Who Should Get a Blood Lead Test

The lead poisoning test for adults is the same as for children: a blood lead test, ordered by a health care provider or done through your employer’s medical program. The CDC says it is the only way to tell whether you have been exposed, and most exposed adults have no symptoms. What matters is whether your work, hobby or home puts you near lead.

Pregnant woman talking with her doctor in a calm clinic room

In short: adults who work with lead (construction and renovation, battery making and recycling, smelting, firing ranges, welding and cutting, demolition), adults with lead hobbies (shooting, casting bullets or fishing weights, stained glass, lead glazes), and adults who use certain imported remedies, cosmetics or spices should talk to a doctor about a blood lead test. At work, OSHA requires employers to offer free blood lead testing to workers exposed at or above an airborne action level of 30 µg/m³. The CDC does not recommend testing every pregnant woman, but it does recommend a risk assessment at the first prenatal visit and a blood test if even one risk factor is found.

This guide explains what the CDC, NIOSH and OSHA say. It is not medical advice: only a health care provider can decide whether you need a test and what your result means. For urgent questions about a possible poisoning, call Poison Control at 1-800-222-1222.

Which adults should ask about a blood lead test

Most adult lead exposure comes from work. The CDC’s list of jobs that may involve lead includes:

Repair, renovation, remodeling and painting of homes and commercial buildings, plus abatement and demolition
Painting or sanding steel structures such as bridges and water towers
Making products that contain lead, such as batteries, bullets and circuits, and recycling materials such as electronics (NIOSH also names lead-acid battery recycling)
Melting lead: secondary smelting, foundries and casting, incinerators; and mining or smelting ore
Using firearms or working at a firing range (law enforcement, military, instructors)
Welding and cutting, and art work with leaded ceramic glaze, glasswork or stained glass

NIOSH studies have also found lead exposure above OSHA’s limit in radiator repair shops.

Hobbies count too. The CDC names casting or soldering (bullets, fishing weights, stained glass), target shooting, mixing or applying lead glazes and pigments, home renovation in a building from before 1978, and drinking home-distilled liquor such as moonshine. People with bullet fragments retained from a gunshot wound are also on the CDC’s list.

Finally, some products carry lead into the body directly. The CDC lists complementary, alternative or traditional medicines, cosmetics and ceremonial powders that may contain lead; the FDA has warned about kohl (also sold as kajal, surma and other names) and about certain Ayurvedic products; and recalls have involved ground spices, including cinnamon. Our guide to lead in cinnamon and spices covers the food side, and lead poisoning causes and prevention covers the rest.

Who is recommended a test: a quick table

Your situation	What’s recommended	Source
Worker exposed to airborne lead at or above 30 µg/m³ (the action level)	The employer must offer blood lead testing (and zinc protoporphyrin) at no cost; periodic testing follows	OSHA 29 CFR 1910.1025 and 1926.62
Construction worker exposed at or above the action level on any day	Initial blood sampling offered by the employer	OSHA 29 CFR 1926.62(j)(1)(i)
Worker whose employer does not test	Ask your employer about routine testing; if there is none, talk with your health care provider	CDC/NIOSH Information for Workers
Lead hobby (shooting, casting, stained glass, glazes) or pre-1978 home renovation	Contact a health care provider, who decides whether you need a test	CDC Jobs, Hobbies or Other Activities
Use of imported remedies, kohl or similar cosmetics	Stop using the product; ask a provider about testing, especially for children and pregnant or nursing women	FDA (kohl); CDC
Pregnant, with one or more risk factors	Blood lead test; risk assessment at the earliest prenatal contact	CDC 2010 pregnancy guidelines
Breastfeeding parent who works with lead	Also ask the baby’s pediatrician whether you should have a blood lead test	CDC/NIOSH Information for Workers

Lead exposure at work: what the OSHA lead standards require

Occupational lead exposure in the US is covered by two OSHA standards: 29 CFR 1910.1025 for general industry and 29 CFR 1926.62 for construction. Both set a permissible exposure limit (PEL) of 50 µg/m³ of air and an action level of 30 µg/m³, each averaged over an 8-hour day. The action level is what switches on the blood testing rules. Blood levels below are in µg/dL, as on a lab report.

Blood testing schedule

General industry: workers exposed at or above the action level for more than 30 days a year get blood lead testing at least every 6 months; every 2 months if the last result was 40 µg/dL or higher (until two results in a row are below 40); and at least monthly while removed from lead work.
Construction: initial blood sampling for anyone exposed at or above the action level on any day. Workers exposed at that level for more than 30 days in any 12 months are tested at least every 2 months for the first 6 months, then every 6 months; every 2 months while at 40 µg/dL or higher; monthly during removal.
In construction, tasks such as manual scraping or sanding of lead paint and heat-gun use count as high exposure until measured, with blood monitoring as part of interim protection.

Both standards say the medical surveillance must be provided without cost to employees. In construction, the employer must tell each worker their blood lead result in writing within five working days. In both, workers at 40 µg/dL or higher must be told in writing within five working days, along with the medical removal rules.

Medical removal

	General industry (1910.1025)	Construction (1926.62)
Removed from lead exposure at	60 µg/dL or higher, or an average of the last three tests at 50 µg/dL or higher (not required if the last test was below 40)	50 µg/dL or higher
Return to former job	Two tests in a row below 40 µg/dL	Two tests in a row below 40 µg/dL
Medical removal protection	Up to 18 months of benefits (pay, seniority and rights kept)	Up to 18 months of benefits

Workers also have a right to a second medical opinion, and under the general industry standard a worker can ask for pregnancy testing or a male fertility evaluation as part of the medical exam.

Keep in mind that these numbers date from the 1970s and 1990s. OSHA itself said in 2022, when it opened a rulemaking on the blood lead triggers, that harm in adults can occur below the current removal and return-to-work levels. As of October 2026 OSHA’s page still shows only that 2022 advance notice, with no proposed rule. NIOSH notes that a few state agencies, such as Michigan’s MIOSHA and the California Department of Public Health, have their own blood lead guidance for workers, so check your state. For what health research says about lower levels, see effects of lead poisoning and blood lead levels.

Take-home lead: protecting your family

NIOSH warns that people who work near lead can bring lead dust home on their clothes, shoes and hair, and that children and pregnant women are especially at risk. NIOSH’s advice to workers:

Change into work clothes and shoes that stay at work, and never leave without cleaning up, even for a quick trip.
Wash with soap designed to remove lead before eating, drinking or smoking; NIOSH says ordinary soap and water are not enough.
Shower and wash your hair before leaving if showers are provided; if not, wash as much skin as you can and change clothes and shoes before going home.
Do not take tools, scrap or packaging home. If work clothes must go home, keep them in a closed plastic bag and wash and dry them alone.

For workers above the PEL, OSHA’s construction standard also requires clean change areas and showers where feasible. If someone in your home works with lead, ask your children’s doctor about testing them; our blood lead test guide explains how it works for children. Home renovators should follow lead-safe renovation (RRP) practices.

Lead test in pregnancy and while breastfeeding

Lead stored in bone can be released during pregnancy and pass to the baby, the CDC says. Its Guidelines for the Identification and Management of Lead Exposure in Pregnant and Lactating Women (November 2010, still linked from CDC’s pregnancy page) say:

The CDC does not recommend testing all pregnant women. Routine testing is recommended in clinics that serve populations with specific risk factors.
Elsewhere, providers should assess risk as part of the occupational, environmental and lifestyle history, at the earliest prenatal contact, and test if even one risk factor is found.
Risk factors named include recent immigration, pica (eating non-food items), work with lead, nutritional status, traditional remedies or imported cosmetics, and lead-glazed pottery used for cooking or storing food. Old paint matters mainly during renovation of older homes.
Follow-up testing and a search for the source start at 5 µg/dL. The guidelines say pregnant women at 10 µg/dL or higher should be removed from work exposure to lead.
Breastfeeding: the CDC encourages mothers below 40 µg/dL to breastfeed, and encourages mothers at 40 µg/dL or higher to pump and discard milk until their level drops below 40. CDC’s breastfeeding page says testing breast milk for lead is not recommended.

The American College of Obstetricians and Gynecologists (ACOG) Committee Opinion No. 533 on lead screening in pregnancy also favors a risk assessment over routine testing for everyone. If any of these risk factors apply, tell your provider. Treatment decisions belong to your doctor; do not try supplements or products sold to “remove lead.”

Adult lead surveillance: NIOSH ABLES and your state

NIOSH runs the Adult Blood Lead Epidemiology and Surveillance program (ABLES), which it describes as a state-based surveillance program of laboratory-reported adult blood lead levels. Labs report adult results to participating states, which follow up on high results and track where exposure comes from. Since 2015, NIOSH has used 5 µg/dL as the reference level that marks an elevated adult blood lead level for surveillance. The Council of State and Territorial Epidemiologists (CSTE) uses a reference value of 3.5 µg/dL for adults and children.

How to ask your doctor or employer

Your employer: NIOSH suggests asking whether they do routine blood lead testing and following their lead control plan. If you are exposed at or above the action level, OSHA requires the employer to offer testing at no cost.
Your doctor: say plainly what you do: “I scrape paint in old houses,” “I cast my own bullets,” “I use an imported remedy.” NIOSH says lead symptoms look like other illnesses, so your exposure history is what prompts the test.
Concerns about your workplace: NIOSH offers a free Health Hazard Evaluation on request, and you can contact your nearest OSHA office about unsafe conditions.

Cost and coverage

For workers covered by OSHA’s lead standards, required blood testing is free to the employee. Outside work, the CDC says health care providers and most local health departments can test for lead, and many private insurance plans cover the test. We do not list prices because no official source publishes one; ask your provider, insurer or health department before the test.

Home test kits do not test people. They check paint, dust, soil or water, which helps find a source but cannot replace a blood test. See our lead poisoning test page and the lead poisoning hub.

Frequently asked questions

Is there a lead poisoning test for adults?

Yes. It is a blood lead test, usually a blood draw from a vein, ordered by a health care provider or done through an employer’s medical surveillance program. The CDC says it is the only way to confirm exposure.

Does my employer have to pay for a blood lead test?

If you are exposed at or above OSHA’s action level of 30 µg/m³, the lead standards require the employer to provide medical surveillance, including blood lead tests, without cost to you.

Should every pregnant woman get a lead test?

The CDC does not recommend testing all pregnant women. It recommends a risk assessment at the first prenatal contact and a blood lead test if any risk factor is found, and routine testing where the patient population has known risk factors.

October 10, 2026

Blood Lead Levels: What Your Lead Test Results Mean

There is no “normal” lead level in blood that is known to be safe: the CDC says no safe blood lead level in children has been identified. What a result can tell you is how your number compares with official benchmarks, such as the CDC’s blood lead reference value of 3.5 µg/dL, and what health agencies say should happen next.

Doctor explaining results to an adult patient in an exam room

In short: blood lead results in the US are given in micrograms per deciliter (µg/dL). For children, the CDC’s reference value is 3.5 µg/dL: a level at or above it is higher than in 97.5% of US children aged 1 to 5, and it starts follow-up. In pregnancy, CDC guidance starts follow-up at 5 µg/dL. OSHA requires removal from lead work at 50 to 60 µg/dL, a legal limit, not a safe level. A high finger-stick result needs a venous test to confirm it. Your doctor or health department decides what your number means for you.

Children's blood lead levels and CDC follow-up

3.5102045

3.5 µg/dL CDC reference value
10 µg/dL Confirm within 1 month
20 µg/dL Confirm within 2 weeks
45 µg/dL Confirm within 48 hours

No safe blood lead level has been identified. A capillary result above 3.5 is confirmed with a venous test. Source: CDC

This guide explains what official sources say about the numbers. It is not medical advice. For questions about a possible poisoning, call Poison Control at 1-800-222-1222; for severe symptoms, call 911. How the test itself is done, and who should be tested, is covered in our blood lead test guide.

How to read the number on your lead test results

US labs report a blood lead level (BLL) in µg/dL, micrograms of lead per deciliter of blood. The OSHA general industry standard writes it as µg/100 g of whole blood.

Labs outside the US often use micromoles per liter (µmol/L). The CDC’s guidelines for pregnant and lactating women give the conversion as 1 µg/dL = 0.0484 µmol/L. So 5 µg/dL is about 0.24 µmol/L, 10 µg/dL about 0.48 µmol/L, and the 3.5 µg/dL reference value about 0.17 µmol/L. If your report is in µmol/L, multiply by about 20.7 to get µg/dL, or ask the lab to state it in µg/dL.

On your report, also look for three details:

Sample type: capillary (finger-stick or heel-stick) or venous (from a vein). The CDC says a capillary result at or above the reference value should be confirmed with a venous sample, because lead on the skin can make a finger-stick read high.
“Less than” results: a value reported as below a limit (for example “<1”) means the lab cannot measure lower than that, not that there is zero lead.
The date: a blood test mostly reflects recent and ongoing exposure. Comparing results over time is how doctors see whether a level is going up or down.

Is there a normal lead level in blood?

Not in the sense of a safe range. The CDC’s 2021 report on the reference value states that no safe blood lead level in children exists, and the CDC says any detectable lead means a child has been exposed. The CDC’s 2010 guidelines on pregnancy say the same about pregnancy: no level has been found below which harmful effects do not occur.

What people often mean by “normal” is “typical.” CDC guidance notes the average US blood lead level fell from about 13 µg/dL in the 1970s to under 2 µg/dL by the mid-2000s, so most people today have a low number. Typical is not the same as harmless.

The CDC blood lead reference value (3.5 µg/dL) explained

The blood lead reference value is a statistical marker, not a health limit. The CDC sets it at the 97.5th percentile of blood lead levels in US children aged 1 to 5, measured by the National Health and Nutrition Examination Survey (NHANES). A child at or above it has more lead in their blood than 97.5% of children that age.

2012: the CDC introduced the reference value at 5 µg/dL, replacing the older “level of concern” of 10 µg/dL.
October 2021: the CDC lowered it to 3.5 µg/dL, using NHANES data from 2015 to 2018.
Going forward: the CDC says it reviews the two latest NHANES cycles every four years, so the number can change again.

It is a way to find the children with the most exposure and act there first, not a line between safe and unsafe. More on children is on our lead and children page.

What is an elevated blood lead level?

“Elevated” depends on who is using the word and for what purpose. These are the benchmarks official sources use today:

Number	What it is	Who uses it
3.5 µg/dL	Blood lead reference value for children aged 1 to 5 (97.5th percentile)	CDC, since October 2021
3.5 µg/dL	Reference value in the national “lead in blood” case definition, for children and adults (confirmed by a venous test, or two capillary tests in a child under 16)	CSTE (Position Statement 22-EH-01) and CDC national surveillance, 2023 definition
5 µg/dL	Level used to flag an elevated adult result for surveillance	NIOSH Adult Blood Lead Epidemiology and Surveillance (ABLES) program, per its guidance page (April 2024)
5 µg/dL	Level in pregnancy that should trigger follow-up testing, education and a search for the source; NIOSH says a pregnant person should not exceed it	CDC 2010 pregnancy and lactation guidelines; NIOSH
10 µg/dL	Pregnant women at or above it should be removed from work exposure to lead	CDC 2010 pregnancy and lactation guidelines
40 µg/dL	Mothers at or above it (confirmed) are advised to pump and discard breast milk until the level drops below 40	CDC 2010 pregnancy and lactation guidelines
50 / 60 µg/dL	Medical removal from lead work	OSHA lead standards (see the workers section below)

Note the gap between the public health numbers (3.5 to 10 µg/dL) and the OSHA workplace numbers (40 to 60 µg/dL). The OSHA standards date from 1978 and 1993.

Blood lead level chart for children: what the CDC says happens next

The CDC publishes recommended actions for health care providers by a child’s blood lead level. This is a summary to help you follow the conversation with your child’s doctor. The doctor and your local health department decide the actual plan.

Child’s blood lead level	Confirm a capillary result with a venous test within	What the CDC lists for providers
Below 3.5 µg/dL	No confirmation needed	Education about lead sources, developmental checks, diet review (iron and calcium), retesting by age and risk
3.5 to 9 µg/dL	3 months	All of the above, plus: report to the state or local health department, exposure history, environmental investigation as required, check for iron deficiency, follow-up testing
10 to 19 µg/dL	1 month	Same as 3.5 to 9, with follow-up testing sooner
20 to 44 µg/dL	2 weeks	All of the above, plus: full history and physical exam, environmental investigation and lead hazard reduction, other medical checks; the doctor may consult a Pediatric Environmental Health Specialty Unit or Poison Control
45 µg/dL or higher	48 hours	Urgent medical evaluation, including a detailed neurological exam; hospital admission if there are symptoms or the home is not lead-safe; the doctor consults a medical toxicologist about treatment

The retesting schedule for each band is in our blood lead test guide. Treatment decisions belong to the child’s doctor; our lead poisoning treatment page explains what official guidance describes. Do not use home remedies or supplements sold to “detox” lead.

Blood lead levels in pregnancy and breastfeeding

Lead can pass from mother to baby. The CDC’s Guidelines for the Identification and Management of Lead Exposure in Pregnant and Lactating Women (2010) do not recommend testing every pregnant woman; they recommend testing based on risk factors. They call for follow-up testing, education and environmental, nutritional and behavioral steps for every pregnant woman at 5 µg/dL or higher, and they recommend a venous sample for testing in pregnancy. The follow-up schedule:

Venous blood lead level in pregnancy	Follow-up testing (CDC 2010, Table 5-3)
Below 5 µg/dL	No follow-up testing indicated
5 to 14 µg/dL	Within 1 month; a maternal or cord blood lead level at delivery
15 to 24 µg/dL	Within 1 month, then every 2 to 3 months; a level at delivery
25 to 44 µg/dL	Within 1 to 4 weeks, then every month; a level at delivery
45 µg/dL or higher	Within 24 hours, then at frequent intervals; consultation with a clinician experienced in lead exposure in pregnancy is strongly advised

The same guidelines say pregnant women at 10 µg/dL or higher should be removed from occupational lead exposure. For breastfeeding, mothers below 40 µg/dL are encouraged to breastfeed; mothers with a confirmed level of 40 µg/dL or higher are advised to pump and discard their milk until their level drops below 40 µg/dL. If you are pregnant or nursing, your obstetric provider and your baby’s pediatrician decide what applies to you.

Blood lead levels for adults and workers

Most adults with a raised level were exposed at work (construction, battery recycling, firing ranges, smelting and similar jobs), through a hobby, a home renovation or a contaminated product. The national surveillance definition counts an adult venous result at or above 3.5 µg/dL as a case of “lead in blood,” and the NIOSH ABLES program uses 5 µg/dL to flag an elevated adult level. See lead testing for adults for when adults get tested.

For workers covered by OSHA’s lead standards, the law sets these blood lead triggers:

Rule	General industry (29 CFR 1910.1025)	Construction (29 CFR 1926.62)
Routine blood testing	At least every 6 months for covered workers	At least every 2 months for the first 6 months, then every 6 months
Test more often	At least every 2 months once a result is 40 µg/dL or higher, until two in a row are below 40	Same: every 2 months at 40 µg/dL or higher, until two in a row are below 40
Medical removal from lead work	A test and follow-up test at or above 60 µg/dL, or an average of the last three tests, or of all tests over the past 6 months (whichever covers the longer period), at or above 50 µg/dL, unless the last test was below 40	A test and follow-up test at or above 50 µg/dL
Return to the job	Two tests in a row below 40 µg/dL	Two tests in a row below 40 µg/dL

These are minimum legal requirements, not health targets. NIOSH’s guidance page notes that medical groups recommend acting much earlier: for example, California’s health department recommends retesting adults every 3 months at 3.5 to 9 µg/dL, and AOEC, ACOEM and California recommend medical removal after one result above 30 µg/dL. If you work with lead, tell your doctor.

Why a finger-stick result needs a second test

Lead dust on the skin can get into a finger-stick sample and make it read high, so the CDC recommends confirming a capillary result at or above 3.5 µg/dL with a venous draw. The national case definition works the same way: a single capillary result in a child counts as “suspect,” while a venous result, or two capillary results within 12 weeks, counts as “confirmed.”

Questions to ask your doctor about a lead result

Was this a capillary or a venous sample? Does it need a venous test to confirm it, and by when?
What is the exact number and unit, and how does it compare with my (or my child’s) earlier results?
When should the next test be?
Has the result been reported to the health department, and will they offer a home visit or environmental investigation?
Which sources should we look for first: old paint and dust, water, soil, a job or hobby, spices, cosmetics, remedies or dishes?
Should other family members, or a pregnant household member, be tested too?

Finding the source matters as much as the number. Our lead poisoning causes and prevention guide walks through the common ones, and lead poisoning symptoms explains why many people with lead in their blood have no symptoms at all. For the bigger picture, see the lead poisoning hub.

Frequently asked questions

What is a normal lead level in blood?

There is no known safe level. Most people in the US have low levels today, and the CDC uses 3.5 µg/dL as a reference value: a child at or above it has more lead than 97.5% of US children aged 1 to 5. A result below that is common, but it is not a guarantee of no harm.

What blood lead level is considered elevated?

For children, a level at or above the CDC reference value of 3.5 µg/dL. The national case definition uses 3.5 µg/dL for adults too, while the NIOSH ABLES program flags adults at 5 µg/dL. In pregnancy, CDC guidance starts follow-up at 5 µg/dL.

Is 2 µg/dL of lead in blood bad?

It is below the CDC reference value, so it does not trigger the follow-up for elevated levels. The CDC still says any detectable lead means exposure, so ask your doctor about likely sources.

Can I lower my blood lead level at home?

The main step official sources describe is stopping the exposure, which usually means finding the source with help from your health department or a lead poisoning test and home investigation. Any medical treatment is your doctor’s decision. Do not take supplements or products sold to remove lead without your doctor’s advice.

October 10, 2026