Lead Hair Concentration (24-Hour Average)

Why This Test Is Done

Your healthcare provider may order this test if you have symptoms of lead poisoning (such as fatigue, headaches, or developmental delays in children), if you work in an environment with lead exposure, or if you have other conditions linked to lead exposure like high blood pressure or kidney problems. It can also be used to monitor long-term exposure in people who have been exposed to lead in the past.

What to Expect Before the Test

No special preparation is needed. Hair samples are collected during a routine visit, usually by a healthcare professional. You may be asked to remove any hair products or styling products from your hair to ensure accurate results.

What the Test Results Mean

Hair lead levels can reflect past exposure to lead, as hair grows continuously. Higher levels may indicate significant exposure, but they don’t show immediate or short-term exposure. Results are used alongside other tests, like blood lead levels, to guide treatment and prevention strategies.

Common Causes of Lead Exposure

Lead can enter the body through contaminated food, water, dust, or exposure to lead-based products like old paint, batteries, or certain toys. Occupational exposure (e.g., working in construction, plumbing, or manufacturing) and environmental factors (e.g., lead pipes, poor air quality) can also contribute.