Oxycodone can be a relief to know that it can only be detected for a limited amount of time. Blood samples usually only show traces for about a day. The Saliva tests can show traces for 1-2 days, and the urine tests for 3-4 days. If a hair test is taken, it can show Oxycodone usage for a longer period of time, up to 90 days. There are many factors that can influence the time frames me... https://secondnewlife.com/how-long-does-oxycodone-stay-in-your-system/