I recently came back from Europe (went to Amsterdam's coffee shops) and I will be performing a swab drug test in a few days for employment. At the time of the test, I will have not smoked marijuana for 7 days. I have been a chronic user for many years and I am worried that it still may be detected past 72 hours. Does anyone know of legitimate evidence that supports people who say it is only detectable for a few days? Please help!!