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.
A hair follicle test can detect codeine for up to 90 days. The effectiveness of hair testing depends on hair length and heaviness of drug use. However, unlike other testing methods, it can take 1 to 3 weeks for the drug to show up following initial ingestion.