I took 2 100 mgs of tramadol that someone at work gave me for pain I was having in my knee. I never took these before . I usually use ibuprofen. So I took the pills on a Sunday evening. My knee was hurting bad and I had to report it at work so standard procedure means I have to take a drug urine test. I did that Tuesday night. 2 days later. Will this make me test dirty? I don't have a prescription and didn't even know what tramadol was. I thought the guy just gave me over the counter stuff. It was a 10 panel test and I'm worried it might be negative.. it is now Saturday and I've heard nothing however I am in a wellness program for my knee. If it came out dirty will they wait until I go back to work or fire me on the spot?