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.
*The Opiate urine drug test uses Morphine as the calibrator for the stated 2,000 ng/mL testing level. The following table lists the concentrations of compounds (ng/mL) that are detected as positive in this urine drug test.