is it a urine test or hair test?
jpescobar Reviewed by jpescobar on . Need information regarding hair-testing and Northrop Grumman (shipbuilding) Okay, first timer here, and I have two questions: 1.) How far does the hair follicle test go back with Northrop Grumman? Couldn't seem to find an answer for this anywhere on the internet. 2.) Didn't smoke marijuana for about a year, and I took 3-4 puffs two days ago and haven't smoked since. Used to smoke cigarettes but I'm quitting that for good, along with alcoholic drinks (I rarely even drink, only once in a blue moon). Also sworn off coffee and green tea until after such a test. Rating: 5