International products may comply through the German AgBB/DIBt testing method, which is followed by GUT, EMICODE, and Blue Angel. If using the AgBB/DIBt test results, select the 3, 7, or 14 day time point. You should also check that the test parameters match the California Department of Health Services protocol—if not, USGBC will allow you to multiply the test results by a factor of 0.7 to determine compliance.