International law. International law is the set of rules generally regarded and accepted as binding in relations between states and between nations. It serves as a framework for the practice of stable and organized international relations.
The exact amount of time that codeine is detectable in urine depends on the amount of codeine a person is taking, what formulation of the drug theyâre using, and how long theyâve used it. Typically, codeine can be detected in urine for only 1 or 2 days.
How long codeine is detectable depends on the type of drug test. 1  Urine tests can detect codeine after two days and for up to 10 days. 2  Blood tests should be taken within 30 minutes to one hour after the last dose to hit the peak plasma time, however, they can detect codeine for up to 16 hours.