Who is qualified to analyze samples for lead?

The correct choice is that samples for lead analysis must be conducted by certified laboratories that are accredited by the National Lead Laboratory Accreditation Program (NLLAP). NLLAP focuses on ensuring that laboratories meet specific standards for testing lead in various materials, including paint, dust, and soil. This accreditation signifies that the laboratory has the proper personnel, equipment, procedures, and quality control measures in place to provide reliable and valid results.

Using a certified laboratory ensures that the analysis is compliant with regulations and recognized standards, which is crucial for legal and health-related decisions. The reliability and accuracy of lead testing are vital, as lead exposure poses serious health risks, especially in children.

Other options do not meet the stringent requirements for lead analysis. Not all laboratories are equipped or trained to handle lead testing properly, and therefore, any laboratory cannot be considered qualified. Similarly, while government agencies may have capabilities to analyze lead, they are not the only entities allowed to do so. Private individuals lack the necessary training, accreditation, and equipment to conduct lead analysis, making the use of certified laboratories essential for responsible lead testing practices.