Substance abuse screening evaluates if a persons substance use may need further exploration for potential of an abuse disorder there are different types of screening and the result of a screening is usually yes positive or no negative. If you have answered yes to two or more of the questions above it suggests you may have an issue with substance abuse or addiction it is important to note that the use of substances as an eye opener 4 is considered the most critical question. Typically these kits test for drugs that are commonly abused such as marijuana cocaine methamphetamines and ecstasy 2 the home drug tests are similar to home pregnancy tests in that colored lines indicate a positive or negative answer there are of course limits to urine drug tests. Assessment of substance abuse can be easy or very difficult some people give you all the signs such as arrests for duis positive drug screenings when they deny drugs or inconsistent and suspicious stories that they trip themselves with others deny use altogether and make it hard for you to distinguish between use and abuse