If you snort 80 mg of OxyContin a day will it be out of your system in 2-4 days for a urine or blood test?

More than likely 5-6 days for the urine, but could be up to 10 if you're a chronic user. A blood test will stop showing levels as soon as the drug leaves your bloodstream. Urine is a little more complex, as it tests for metabolites rather than the actual presence of the drugs in your system.