ya, diazepam has a very long half life... the longest of the benzodiazepines i think. youd be much better off with some zolpidem/zapelon. half of it is still in ur system after about 50 hours.
the majority of drug tests do not look for this..
i really do think your looking at a few weeks minimum for it to be undetectable.
drug detection rates are typically given for just a particular class of drugs... in this case you have some drugs in this class that stay in your system 25 times longer than others. ... valium just so happens to be the one that stays in the longest. i would say xanax is probably a few days, but valuim alot longer. my point is that people quoting the 3-5 days are simply repeating what they have heard is the norm for most things... not the case here.
real advice: drink a gallon of water hours before the test, take a few "vitamin B complex's" pills to make ur piss still yellow even tho its dilute... and get some creatine while ur at GNC too and take a few grams here and there before the test... they measure creatinine(a metabolite) to see how dilute ur piss is... so with the vitamins givin u color, and creatine making it seem concentrated, you can basically piss straight water without them saying anything.
and oh ya... ur best bet is to not be messing with drugs. naughty!!! lol
u could always just get prescribed a drug in this class if u got alot on the line... whats that you say? your freaking out? scared all the time? panic? well.... they have something for that lol.
p.s... drinking tons of water days prior doesnt help.