I have a bit of trouble in Germany to keep my drivers licence.This is because of a story, happend 2!! years ago. The police suspected me that I `m dealing with drugs (bullshit), the special forces stopped my car, they couldn `t find anything, I was doing a piss test (they found THC ) NOW ( 2 years later ) they asked for a second test ( I had the driving licence the whole time, nothing happened), and now I was panicing, because I did not had a clue, how long it is staying in the blood. Thanks to your information, I feel much more secure now !!!!! Making a piss test, if police have the idea you are stoned, slowly getting a sort of fashion in here, as well as regular checks afterwards, if the connect you somehow to drugs (that you can keep your licence)