I was active AF Reserve for the last 7 years of my career and every drill weekend there was random urinalysis. How they pick who will test is by drawing a number out of a hat. That number is the place in the SSN. Another number is drawn and that is the number from the SSN. So if they picked a 7 first and a 1 second, everyone with a 1 in the 7th place in their SSN had to test. I went through my career without testing once on Active Duty, but I sure didn't count on it. I gave it up for 20 years to finish my career without the fear of losing it all at any time.

I've known a lot of folks who play the gambling game that they won't have to test. Some win, most lose. Most urinalysis testing uses trusted agents that have to watch you pee. So you can forget urine kits. Also you don't get a heads up, you just get tabbed and taken over to the hospital for testing. I suppose if you have very little body fat and flush before each drill, you might be ok. I wouldn't chance it, but that's just me.