No single rate of administration or composition of maintenance intravenous fluids is appropriate in all circumstances. Thus, intravenous fluids may be viewed as medications that require careful dose adjustment that is specific to the disease state of each patient.
Codeine - 1 day in urine, up to 90 days in hair, 12 hours in blood. Fentanyl - 1 day in urine, up to 90 days in hair, 4 hours in blood. Morphine - 2 -3 days in urine, up to 90 in hair, 6 - 8 hours in blood. Heroin - 3 to 4 days in urine, up to 90 in hair, up to 12 hours in blood.
How long a pill stays in your system is different for everyone. There are many factors involved such as how many milligrams you are taking and how long you have been taking them. Opiates have what is called a half-life, and I think a percocet's half-life is 12 hours. Which basically means if you take 10 milligrams of percocet, 5 of those milligrams will be out in 12 hours.