Staples drug testing in California?

Hey everyone, I'm new here but i've been reading a lot of posts on the board. I had a couple questions and I figured I should just sign up and ask.
First off, I recently applied at Staples not too long ago, and I have an interview this week. I'm 19 years old and live in Southern California. I was just wondering if anyone has any experience with Staples, and I would like to know if they conduct pre-employment drug tests. And if so, could you help me out by letting me know what my chances of passing a urine test would be? (Also, this will be my first actual job if I get hired).

I am 6'1, and I weigh 130 lbs. I go on bike rides and exercise frequently. I'm not a heavy smoker, but I have been smoking non-stop for the past 5 years. Only a gram or so a week tho, between me and my friend. So i'd say I'm smoking .5-.7 a week. If I were to be drug tested I'm sure that it would be the day after the interview, unless I don't get the job. The last time I smoked was yesterday. With my high metabolism and basically no body fat (like 3-5%) do you think I could pass a urine test in 4-6 days? I'm just a nervous person I guess you would say.

Thank you all for your time. :)

I didn't really expect an instant reply >.< But any answers would really ease my troubles.

Anyone? :/

No one here or anywhere else can tell you that with any amount of certainty. Do yourself the favor of picking up a home test kit if you wish to know your present and future circumstances.

Test with your first void of the day before any fluid intake.