Specialty Testing Guide › Heavy Metals Testing
For adults, the biggest metal exposures usually come from work and hobbies, not from food or the air at home. Jobs that cut, grind, melt, blast or sand metal or old paint, and hobbies like target shooting, casting sinkers or making stained glass, can raise lead and other metal levels far above what everyday life does.
The good news is that these exposures are easy to identify and often easy to reduce. A clear exposure history is also what makes a metal test meaningful, rather than a guess.
Key takeaways
- Adult lead poisoning is often linked to work, and hobbies such as shooting add to the risk.
- Dust on clothes, shoes, skin and car seats can carry lead home to children and partners.
- Occupational medicine experts recommend acting at much lower blood lead levels than federal workplace rules require.
- Welding fumes add manganese to the picture, and some trades also involve cadmium.
Jobs with real metal exposure
The Pennsylvania Department of Health notes that adult lead poisoning is often associated with occupational exposure.1 Common higher-risk work includes:
- Construction and renovation on older buildings, especially paint removal, demolition and window replacement.
- Bridge and steel structure work, including abrasive blasting and torch cutting of painted steel.
- Battery manufacturing and recycling.
- Welding and metal cutting, which can involve lead, manganese and cadmium depending on the materials and coatings.
- Firing range work, including instructors and cleaning staff.
- Scrap and electronics recycling, radiator repair and foundry work.
Manganese deserves a mention for welders. Certain jobs like welding or working where steel is made can expose people to high levels of manganese, and the most common health problems in highly exposed workers involve the nervous system.2
Hobbies that add up
The same state health department lists hobbies such as recreational indoor shooting, hunting and fishing as raising adult lead exposure. Others to think about:
- Shooting and reloading, including casting your own bullets.
- Making fishing sinkers or jigs from melted lead.
- Stained glass, which uses lead came and lead solder.
- Ceramics and pottery with lead-containing glazes.
- Restoring old furniture, boats or cars with lead paint.
- Electronics soldering with lead solder, especially in a small, unventilated space.
Shooting deserves special attention. A review of 36 studies of shooters at firing ranges found that 31 reported blood lead levels above 10 micrograms per deciliter in some shooters, with levels rising with the number of rounds fired, the caliber and the lead in the range air.3 Indoor ranges with poor ventilation are a particular concern.
What the workplace rules say
The OSHA lead standard for general industry sets an air limit of 50 micrograms of lead per cubic meter over an 8-hour shift. It requires employers to remove workers from lead exposure when blood lead reaches 60 micrograms per deciliter, confirmed by a follow-up test, or averages 50 over the last three tests.4 Construction has its own, similar standard.
Newer evidence suggests those triggers are too high. A panel of occupational medicine experts recommended removing workers from exposure if a single blood lead level exceeds 30 micrograms per deciliter, or if two tests four weeks apart are 20 or higher.5 If your job involves lead, ask what your employer's monitoring shows, and keep copies of your results.
Take-home exposure: protecting your family
Lead dust does not stay at work unless you leave it there. It rides home on clothing, boots, hair, hands, tools and car seats, then settles into carpets, couches and laundry.
The risk to children is well documented. A meta-analysis of US studies from the late 1980s and early 1990s found that children of lead-exposed workers had an average blood lead of 9.3 micrograms per deciliter, compared with 3.6 in children nationally at the time.6 Habits that help:
- Change out of work clothes and shoes before you leave work, and keep them out of the family car.
- Shower at work if it is available, or as soon as you get home, before you hug anyone.
- Wash work clothes separately, or use the employer's laundry service if there is one.
- Wash hands and face before eating, drinking or smoking.
- Keep hobby work out of the kitchen and living areas, and clean with wet methods.
The OSHA standard backs this up. Workers who are required to shower may not leave work in clothing or equipment worn during the shift. If a child lives with someone in a lead job, talk with the child's pediatrician about blood lead testing.
When to get tested, and where
If your work involves lead, your employer may be required to offer blood lead monitoring, and an occupational medicine clinic is often the right place for testing, workplace documentation and return-to-work decisions. For hobby exposure, your own clinician can order a blood lead test.
Blood is the standard test for lead. Hair analysis is not reliable, and "provoked" urine tests, given after a chelating drug, have not been validated for diagnosing metal poisoning.
Your next step
Read adult blood lead levels explained to understand the numbers and follow-up. If your exposure is clearly work-related, see who should not book a heavy metals test for when occupational medicine is the better route. The heavy metals testing hub has the full series.
Frequently asked questions
Can I get lead exposure from shooting outdoors?
Outdoor shooting usually means lower air levels than poorly ventilated indoor ranges, but handling ammunition and spent casings, and reloading or casting at home, still add exposure. Wash your hands before eating or smoking.
Does welding expose you to lead?
It can, especially when cutting or welding painted or coated steel. Welding fumes can also contain manganese, and some coatings and alloys contain cadmium.
Should my family be tested if I work with lead?
Children in the home are the priority. Talk with their pediatrician. Adults in the household can ask their own clinician, especially if work clothes are washed at home.
Will my blood lead go down if I stop the exposure?
Usually, yes, though it takes time. Removing the source is the most important step, and a repeat test shows whether it is working.
Related reading
This article is for general education and is not medical advice. Decisions about testing and treatment should be made with your clinician. If you have severe symptoms, call 911. For a suspected poisoning, call Poison Control at 1-800-222-1222.
