Use a certified lead test kit for painted surfaces
Hire a licensed lead inspector for a full inspection
Send paint, dust, soil, or water samples to an accredited laboratory
Test old paint on walls, windows, doors, and trim
Test household dust on floors and windowsills
Test soil near exterior walls, foundations, and play areas
Test drinking water from taps using a lead-specific water test kit
Test imported pottery, ceramics, toys, jewelry, and cosmetics if lead is suspected
Use an XRF analyzer for non-destructive surface testing
Follow all kit instructions exactly
Collect samples with clean tools and gloves
Compare results to the kit or lab reporting limits
Retest if results are unclear or contamination is possible