What is the first step in conducting a patch test?

The first step in conducting a patch test is the application of a liquid encapsulant in a designated area. This step is crucial because it establishes a controlled environment to assess the effectiveness of the encapsulation method for lead paint. By applying the encapsulant, you are preparing the surface and creating a specific area that can be monitored for the test's duration.

This step is fundamental to ensuring that the subsequent observations can accurately reflect the performance of the encapsulant over time. The application must be done correctly to ensure that any changes in the area can be clearly attributed to the encapsulant rather than other external factors.

Once the encapsulant is applied, visual examinations, making incisions, and recording results will follow, but the initial step sets the stage for a valid and effective test.