The Drug detection screensaver from Trustests gives approximate detection periods for many substances of abuse by drug test type. Drug detection time chart screensaver help students and teachers see the detection times for many substances. The ranges depend on amount and frequency of use, metabolic rate, body mass, age, overall health, and urine pH. For ease of use, the detection times of metabolites have been incorporated into each parent drug. This version is the first release on CNET Download.com.