Does xanax and Valium show up the same in urine test?

Yes. Both are benzodiazepines, so they are in the same family. Drug tests which are sensitive enough to differentiate the two are extremely expensive, and chances are whatever test you're taking is not going to be that sensitive. Best of luck to you - drug testing is an invasion of privacy and should be illegal. It's your body! StandardbredHorse (note to previous poster - please see the link "spell check your answer" - you need it).