Trait controlled by the both environment and genetic factor. Usually, multifactorial traits outside of illness result in what we see as continuous characteristics in organisms, especially human organisms such as: height, skin color, and body mass.
I recently took a drug test for a job. I tested positive for opiates in my urine. I do not and have never taken drugs of any sort other than alcohol. I dont take any prescription drugs, how is it possible that this happened. I hade consumed some beer about12 hours before the test.
Urine Testing. Methadone does not show up in a basic opiate test that is part of the standard pre-employment drug test and which can detect heroin, codeine and morphine (and perhaps oxycodone, hydrocodone, and hydromorphone). A methadone specific test must be performed to detect methadone.