Codeine can be detected by opiate-tests.
Single use
Codeine detection time in blood: 6-12 hours
Codeine detection time in urine: 3-4 days
Regular use
Codeine detection time in blood: 12-18 hours
Codeine detection time in urine: 4-7 days
Chronic use
Codeine detection time in blood: up to 24 hours
Codeine detection time in urine: 7-9 days