Metabolism
Oxycodone is about 45% protein bound. Once absorbed, oxycodone is distributed to skeletal muscle, liver, intestinal tract, lungs, spleen, and the CNS. Oxycodone has been found in breast milk. Metabolism of oxycodone occurs in the liver with excretion principally in the urine. Oxycodone is metabolised to noroxycodone. Conversion to oxymorphone is mediated by the cytochrome P450-2D6 (CYP2D6).

Drug testing
Following the administration of oxycodone, the following substances can be detected up to 72 hours after (depends upon the dose, its frequency, route of administration and urine excretion/dilution): oxycodone and oxymorphone.

Opioids can be detected in urine, blood, bile, hair, nails and sweat
http://codeine.50g.com/info/oxycodone.html

id say chances are they will find it
good luck