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.
The half-life of Valium is quite long. Valium is a benzodiazepine with prolonged effect, gets ingested inactive and becomes an integral part of the metabolic processes in the body, including the liver and the brain barriers. Valium can not be detected in some tests in a short period of use, but it can be detected even after three months after stopping therapy.