Lead in Hair, Mass Concentration

What This Test Measures

Lead is a heavy metal that can build up in the body over time, especially in children and those exposed to lead-based products. Hair is a useful archive because lead accumulates in hair strands as it grows. This test quantifies lead concentration in the hair shaft, reflecting exposure during the months before the sample was collected.

Why It Matters for Your Health

Hair lead testing is particularly useful for identifying chronic exposure, which may not be detected by blood tests alone. Elevated levels can indicate past or ongoing lead exposure that may have caused developmental delays, neurological issues, or other health problems, especially in children.

How the Test Works

A small sample of hair is collected, usually from the scalp. The hair is processed to measure lead content using a specialized analytical method, often high-performance liquid chromatography (HPLC) or another precise technique. Results are reported in micrograms of lead per gram of hair.

When You Might Need This Test

Your healthcare provider may recommend this test if you have a history of lead exposure (e.g., living in an older home with lead paint, working in certain industries, or having lead-based products in your home). It’s also used in children with developmental concerns or symptoms like headaches, abdominal pain, or behavioral issues.