Frequently Asked QuestionsDoes the drug test need to be disposed of in any special way, such as a bio hazard bag? Posted on December 15, 2015August 3, 2023 by rapiddetect Urine and oral drug screens do not pose a bio hazard risk and can be disposed of in regular waste receptacles. rapiddetect What is the minimum amount of specimen needed for a conclusive test result? Are there any substances that can be used in the tests to give a false negative? What can be done to avoid this?