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.
This opiate has no use in health industry and can take the longest amount of time to leave the system of a substance abuser. Some tests can still find traces days after injection, here are the time periods within which it can be detected in different tests: 1  Blood Test: 6 hours.  Urine Test: 2 â 7 days.