So I went to my neurologist for my 4 month visit and was asked to do a drug test. I am not worried about the test because I have been clean for 3 months now. But what concerned me was I had to do a urine and a cheek swab test and was asked if the urine sample would come back as a synthetic sample. Which it was not so no worries. I just thought they couldn't tell the difference. Because I was thinking about smoking and using a synthetic for drug testing because I am looking for a job. Does anyone have any insight on this subject?