More on the peak levels, half life, and detection times for OxyContin below. OxyContin is prescribed in doses of 10-80 mg daily, and is to be taken orally as a tablet. People who abuse OxyContin cut, break, chew, crush, or dissolve OxyContin.
http://drug.addictionblog.org/how-long-does-oxycontin-stay-in-your-system/
Most doses of oxycodone are usually taken with or without food every 4 to 6 hours, either as needed for pain or as regularly scheduled medications. The extended-release tablets are taken every 12 hours. Extended-release tablets are supposed to be swallowed one at a time with plenty of water.
http://prescription-drug.addictionblog.org/how-long-does-oxycodone-stay-in-your-system/
Oxycodone is detectable in a urine test for 3-4 days. A blood test will detect Oxycodone for up to 24 hours. A saliva test will detect Oxycodone from 1-4 days. Oxycodone, like many other drugs, can be detected with a hair follicle drug test for up to 90 days. Oxycodone is metabolized by the cytochrome P450 enzyme system in the liver.
https://www.verywell.com/how-long-does-oxycodone-stay-in-your-system-80297
OxyContin is a sustained, controlled-release formulation of oxycodone. OxyContin is designed to provide delivery of oxycodone over 12 hours (OxyContin vs oxycodone) and can be detected in urine 1-3 days after you take it.
http://drug.addictionblog.org/how-long-does-oxycontin-stay-in-your-system/
Peak levels for oxycodone vary for different individuals, mostly due to the body weight, drug abuse history, age of course and slightly gender. On average, after taking a regular release pill with oral administration of 0,28mg/kg, the peak level would be reached at 1 hour. The half-life in this case would be 5 hours.
http://prescription-drug.addictionblog.org/how-long-does-oxycodone-stay-in-your-system/
Peak levels and half life of OxyContin. The effects of OxyContin start one hour after administration and last for 12 hours in the controlled release formula. Peak plasma concentrations of OxyContin vary by dosage, but are reached between 4-5.5 hours after taking the medicine. Stable plasma levels are reached within 24 hours.
http://drug.addictionblog.org/how-long-does-oxycontin-stay-in-your-system/
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.
http://prescription-drug.addictionblog.org/how-long-does-oxycodone-stay-in-your-system/
Oxycodone is primarily eliminated from the body via the kidneys through urine and to a lesser extent sweat. The half-life of oxycodone is about 3.2 hours, while the half-life for the time-released version (OxyContin) is about 4.5 hours.
https://www.verywell.com/how-long-does-oxycodone-stay-in-your-system-80297
I’ve been taking oxycodone 5 milligrams for 2 weeks to the surgery how long will take for me to get out of my system I weigh approximately 250 and 47 years old been drinking a lot of water I also been taking 5 milligrams volumes for about 2-3 months how long will it take for that to get out of my system.
http://prescription-drug.addictionblog.org/how-long-does-oxycodone-stay-in-your-system/
That depends on how your taking it and how much your taking.  Generally last two to six hours. Do not do Oxycontin,  believe me, after four years of use and tens of thousand…s of  dollars spent for the high, you are going either go broke or lose  your job chasing the high.
http://www.answers.com/Q/How_long_effect_Oxycontin_last
how long does oxy last
Oxy lasts for 12 hours.