Which of the following populations should be prioritized for lead blood level testing?

The focus on prioritizing lead blood level testing for children living in low-income families in older housing is rooted in the heightened risk associated with these demographics. Children from low-income families often reside in older homes, many of which may contain lead-based paint or lead-contaminated soil. These homes may not be adequately maintained or renovated, increasing the likelihood of exposure to lead hazards.

Lead poisoning is particularly concerning in young children due to the significant impact lead can have on their developing brains and nervous systems. Moreover, children in low-income families may have less access to healthcare, which can lead to delays in testing or treatment for lead exposure. Therefore, prioritizing testing for this population helps ensure those most at risk are monitored and protected from the harmful effects of lead.

In contrast, the other populations mentioned are at lower risk for various reasons. Children living in areas with new constructions are less likely to encounter lead hazards because modern building practices and regulations have significantly reduced lead use. High-income families typically have better access to resources, including healthier living conditions and regular health checks, making lead exposure less likely. Adults working in lead-free environments pose minimal risk for lead exposure and thus do not require prioritization for blood level testing.