Some times there is no first test. when you go for probation they will most likely ask when the last time you used anything. If it is in the last 30 days they will give you till your next month to get clean. Be honest and get clean. Hell when I went I told them I was just standing outside burning one. We all laughed cause if I wasn't clean by next month they could put me in jail or worse give you the dickhead proby officer that stands there and holds your dick when you take the test. LOL The easier you are to get along with the better your officer is.