Urine Testing
Easy collection. Low cost. Most used.
Numerous factors influence how long drugs remain present in the system given that every body functions differently. Some of these factors include the amount of drugs that were consumed, metabolic rate, and the volume of fluids that have been excreted after the drug use.
Urine drug testing is the only testing method approved for federally-mandated drug testing and is the most common choice for student and employee drug testing, due to its reliability and affordability.