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Hi. I am Dr Abid.Welcome to Just Answer and thank you for the question.I'm reviewing your question now and will post back with your reply.
Oxycodone is opiod analgesic and this gives false positive result for Morphine .
If you have been tested positive for Morphine , you should show prescription of Oxycodone to you testing authority .
Well this depends on the Oxycodone to leave the system till that this will be positive , you should wait to repeat test .
Oxycodone is detectable in blood tests for roughly 24 hours , in saliva tests for 1-2 days , urine tests 3-4 days and hair tests up to 90 days .
If you are going for blood or urine test you should wait for a week after taking last dose of Oxycodone to show negative test .
Regards ***** ***** luck .
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