Performed leak search in garage in order to find the source of a previous leak. The homeowner had someone out to address the leak and wanted assurance that it was not leaking any more. Opened a 3x3 ft section in the ceiling and exposed the drain pipes for the bathroom groups above. Tested the drains for the tub lavy and toilet. Did not reproduce any leaks. Went on to test the fixtures in a different bathroom and still no leaks.