How long does it take oxycodone to dissapear from my body for a drug test?

I recently had a procedure and Im on oxycodone for pain (no im not an addict). And in one month a half or so Im going to have this urine test for drugs. But I don't want to talk about my oxycodone and therefore the procedure itself.

How long before I stop taking oxycodone does it dissapear from my urine?

: http://alcoholdrugstreatment.info/how-long-does-it-take-oxycodone-to-dissapear-from-my-body-for-a-drug-test