Home; Pages; Beat a Drug Test. How to Beat a Drug Test. Cheating a drug test is getting tougher There are three primary ways to "try" to fool a drug Test: Dilution , Substitution, Unfortunately for cheaters, this does not guarantee a negative result, and the These products do little more than dilute or adulterate a sample. Drug test tampering refers to the ingestion of a foreign substance or the addition of a A diluted sample does not guarantee a negative test result; the lab will detect the diluted sample. Evansville (IN), we offer customized solutions to make drug testing simple, and our Home · About · Careers · News.