how long does it take valium last?
<answer> Valium can be detected in a urine test for up to 1-6 weeks. Blood tests for Valium can detect the drugs for up to 6-48 hours. <context> Valium can be detected in a urine test for up to 1-6 weeks. Blood tests for Valium can detect the drugs for up to 6-48 hours. A saliva test can detect Valium for 1-10 days. Valium, like many other drugs, can be detected with a hair follicle drug test for up to 90 days.