It is becoming more common for employers to test for buprenorphine, so it is worth checking that out. Buprenorphine normally stays in your system at detectable levels for 7-10 days, though this will vary greatly depending on the dose you have taken. You can purchase buprenorphine testing kits online relatively cheaply if you would like to do a self-assessment. There is some emerging research that suggests tramadol can show a false-positive result when testing for buprenorphine so it’s important to find out as much as you can before you take a test for a potential employer.