I took 1 5mg percocet at 8 pm the next day at two i had to do a urine drug screen. it was a one time use. iam 5'8 120 is it detectable ?

Yes: yes, it likely will be. If you have a prescription then you will be fine.

YES: Assuming the drug test includes oxycodone, you will most likely test positive. However, if you have a valid prescription and show no signs of impairment or chronic drug abuse, the reviewing physician will report it out as "negative" for oxycodone. If you do NOT have a valid prescription, then you will likely suffer the consequences of illicit narcotic use.