Sounder commuter rail. Sounder commuter rail (reporting mark SDRX) is a regional rail service operated by BNSF on behalf of Sound Transit. Service operates Monday through Friday during peak hours from Seattle, Washington, north to Everett and south to Lakewood.
Expert: Dr. David replied 3 years ago. clonazepam has a half life of between 20-50 hours. that means that there is a pretty good chance that in 2.5 days it might be detected in your urine.
Depending on the dosage, it can be detected up to  5 days after the last dose. A single 0.5mg dose may not be detectable after say 3 days. But urine tests look for metabolites of a drug. In the case of Xanax, the metabolite is Î±- hydroxyalprazolam, which has the same half-life as xanax itself. If you are taking an Extended-Release version of it, then it may be in a your system for a bit longer. (Other benzos like clonazepam or diazepam, can remain for up to 10 days in your system due to very long half-lives).