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.
Studies have confirmed that foods containing poppy seeds can result in a positive urine test for opiates.1, 2 Some cakes, cupcakes and bagels can contain enough poppy seeds to produce a positive urine tests when no opiates were abused. This is known as a false-positive opiate urine test. Prior to 1998, the US threshold level for a positive opiate urine test was a morphine concentration greater than 300 nanograms/ml (ng/ml) or 0.3Âµg/ml.