Does Wegmans really drug test your hair for full time employees?

I'm in recovery and have been clean for 7 months now. I recently applied for a full time job as a stocking associate and think I did well in the phone interview because I was called to do the in person interview soon. My worry is that I have longer hair and I know that it could still test positive if you go back enough. Is this something that I should worry about? Do not want to waste my nor the companies time doing an interview that I may not even be qualified for due to my past. Thanks everyone.