Michigan Residential Builders License Practice Test

What current techniques are available to identify lead paint?

1. X-ray fluorescence and laboratory analysis

2. Visual inspection only

3. Smell and touch methods

4. Homeowner self-testing kits

The correct answer is: X-ray fluorescence and laboratory analysis

X-ray fluorescence (XRF) and laboratory analysis are widely recognized as effective methods for identifying lead paint. XRF is a non-destructive testing method that uses X-ray technology to determine the presence of lead in paint. It allows for real-time results and can be used on-site, making it a preferred method for many professionals. Laboratory analysis, which involves taking a paint sample and sending it to a lab for testing, provides accurate results and can confirm the presence of lead in a wide range of materials. While other options mention various methods, they lack the specificity and reliability that X-ray fluorescence and laboratory analysis offer. Visual inspections can help identify areas that may have lead paint but cannot definitively confirm its presence. The methods involving smell and touch are largely unreliable and subjective as they cannot provide quantitative results. Homeowner self-testing kits can vary in accuracy and reliability, and while they might provide some indication, they do not match the precision and thoroughness of XRF and laboratory approaches. Therefore, the use of X-ray fluorescence and laboratory analysis represents the current best practices for effectively identifying lead paint.