Suboxone is a very powerful and effective drug. It should never be used without a doctor's prescription and supervision. The suboxone hotline number says that it can show up in a specific urine test up to 11 days after the last dose.
Suboxone can build up in the blood and system if the drug is over used or abused. Typical use can take up to 7 days to leave the system though most tests do not tests for suboxone and it may take up to 14 days for it not to be detected through urine tests.