Native American History. Native American cultures in the United States include a wide array of socially and geographically diverse groups, whose nomadic ancestors are believed to have traveled via a long-gone land bridge across the Bering Strait at least 13,000 years ago.
182. Valium can stay in your system and be detected in urine for up to 5-7 days after therapeutic use. Chronic use (over one year) of Valium, however, can be detected much longer. The detection window for Valium in urine screens is up to 4-6 weeks. More here on the detection window and drug testing for Valium.
Valium has a half-life of 43Â±13 hours. The metabolites of Valium have higher half-lives. Notably, the active metabolite Nordiazepam has a half-life of 40-99 hours. Considering the additive effects of the metabolites, the half-life can go up to 100 hours. Thus, it would not be too wise to assign a number for how long Valium stays in your system.