Are there ways to fool a drug test?
A. It is a little easier to fool a urine drug test than an alcohol test. Proper test procedure should eliminate the possibilities of a subject switching their urine specimen with another, or tampering with the specimen. Drinking large volumes of water will dilute the urine, thereby reducing the concentration of drugs in the urine. The detection of some drugs, such as amphetamines, is affected by the pH of the urine with some kinds of methodologies. There are no proven methods to defeat an oral fluid drug test.
