DaKing, about 3-5 days, but it really depends on what lab it goes to. You go to the lab/room, they cut some hair and and your free to roam the world again. Now some companies will send a letter or call you telling you whether you passed the test. Most of the time though the employer will just tell you, you got the job or not. Ask the lab technican if you can call the lab to check on your results. They will tell you if this is possible or not.