buggingout

Okay, yesterday I took my test at Quest. I substituted with synthetic urine but there was not enough to fill to the mark the nurse had made so I filled to the line with my own urine, only a little bit. Prior to the test I had drank a gallon of 'Cleanz Blendz' it's kind of like 'Puri-Blend'. I tested myself twice with the home test and was negative with a dark 'T' line both times. I have been clean for 7 days and was only a light smoker prior to that. I exercise and have a pretty fast metabolism. My question is, I only used a little bit of my own 'clean' urine in the lab sample, do you think I still passed? I know it was stupid of me and I probably should have just told them it was all I could muster up but it's too late for that now. I'm worried sick over here, I REALLY need this job. Any advice on this would be most appreciated.