There are 2 answers for this question depending upon whether the test in
question is a professionally performed employment drug test or if it is an
over-the-counter home drug test kit.
The answer is simple, don't use drugs. With today's technology there is
no other way to reliably beat a drug test. In the past previous testing
procedures could be confused by certain chemicals that could hide or mask the
presence of drugs, but today's tests eliminate that possibility and give a
complete breakdown of the chemicals found in the sample.
Today's drug tests don't stop at testing for drugs alone. The urine is
also tested for specific gravity, PH and creatinine levels.
Specific Gravity - the amount of mineral in the urine sample.
PH level - acidity of a urine specimen
Creatinine level - a normal bi-product that should be found at certain
levels in urine.
If any of these normal components are missing or found at inappropriate
levels the sample was either adulterated or substituted.
Drug testing myths