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to the original question, for say a urine drug test, a regular user of oxycodone or other opioids it will take 3-6 days to leave your body completely, aim for a week to be safe, the half-life of oxycodone, meaning half the drug out of your blood stream after taking a dose is roughly 3-4 hours and the high lasts around 5 hours.
How long does oxycodone stay in blood? Oxycodone blood concentrations are detectible up to 24 hours after the administration. Oxycodone and its major metabolites are measured in blood to monitor for clearance, abuse, to confirm a diagnosis of poisoning, or to assist in a death investigation.