Assume suspect materials may contain asbestos if they are older building materials
Do not disturb, cut, sand, drill, or sweep the material
Wear appropriate protective equipment if handling is unavoidable
Use a licensed asbestos inspector or qualified professional to assess the material
Collect a sample only if trained and equipped to do so safely
Wet the material lightly before sampling to reduce fiber release
Seal off the area during sampling
Place the sample in a sealed, labeled container
Send the sample to an accredited laboratory
Request analysis by polarized light microscopy or other approved asbestos testing method
Test multiple samples if the material is inconsistent or from different areas
Follow local regulations for sampling, handling, and disposal
Keep the area undisturbed until results are confirmed