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.
1 Blood test: around 12 hours. 2  This is the easiest test to take, as the traces of codeine fall under the detectable levels in less than 1 day. 3  Saliva test: between 1 and 4 days. 4  Hair follicle test: up to 90 days. Urine test: between 2 and 4 days. 2  In this case, proper detection depends on the quantity, the quality and the amount of time youâve taken the drug. 3  Blood test: around 12 hours.