CDPH Lead Inspector/Assessor California State Practice Exam

When should the result of an inconclusive XRF test be confirmed by laboratory analysis?

1. Only if the client insists

2. As a routine procedure

3. When lead content is suspected

4. Per established regulations

The correct answer is: Per established regulations

Laboratory analysis should be conducted to confirm the results of an inconclusive XRF test according to established regulations. Regulations set forth guidelines to ensure that any potentially misleading information from an XRF test is clarified through more definitive laboratory methods. This is critical, as inaccurate results can have significant public health implications due to the potential risks associated with lead exposure. When regulations mandate confirmation through laboratory analysis, it reflects the importance of adhering to standardized practices within the industry to protect public health. This approach ensures that any findings regarding lead presence in paint, dust, or other materials are verified and accurate before drawing conclusions or taking any necessary remediation actions. Therefore, following established regulations is not only a best practice but a necessary protocol to mitigate risks associated with lead contamination.