These personal test strips are designed to detect the possible presence of GHB and Keta in alcohol beverages. These colorless, odorless and tasteless drugs were impossible to detect until now. Our products have become very popular in the students and adults and we are having positive response from the students, Universities and bars. People of any gender can be the target or perpetrator but the university students are more vulnerable. Use the test strip to check your drink. 1. Place a drop of your beverage onto both spots of one test. 2. Smear each gently, wait until dry. 3. If either spot turns to a darker blue color see back the test strip for further instructions.