NLLAPNational Lead Laboratory Accreditation Program
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All testing must meet minimum NLLAP standards for EPA, HUD and Massachusetts Department of Public
An updated list of NLLAP laboratories can be obtained from the National Lead Information Center Clearinghouse at 1800-424-LEAD.
To be recognized by the EPA under the NLLAP, laboratories participate in the Environmental Lead Proficiency Analytic Testing (ELPAT) program and are accredited and audited by the American Industrial Hygiene Association (AIHA; Fairfax, VA).