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 does codeine phosphate stay in your system? Codeine phosphate can be detected in a person's urine for 2-4 days,  and in their blood for up to 12 hours. It can be detected in a  person's saliva for 1-4 days. Codeine isâ¦ an ingredient in many  types of cough syrup.