i had to do a urine test and it was also contaminated. the doctor said that the container may have touched the skin area or, as someone else suggested, the urine may have dribbled over the skin and skin cells entered the specimen. they just did a test on the urine to find out what sort of 'contamination' it was. so they will probably do the same thing for you. it sounds as if getting a contaminated result is quite common.