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 drug testing provider confirmed these opiate positive results with follow-up tests utilizing Gas Chromatography/Mass Spectrometry (GC/MS). The quantitative GC/MS test was also positive for opiates but found both urine samples to contain fairly low levels of morphine and other opiate alkaloids. One of the urine specimens contained 0.15 micrograms/milliliter (Âµg/ml) of morphine and the other 0.3 Âµg/ml.