Opiates, benzodiazepines, amphetamines, barbiturates, phencyclidine are the 5 major classes on the vast majority of drug tests. Of course, many employers will also test for cannabis and cotinine...
A normal 5 panel test(used mostly because it's cheaper) NO but if it's an expended drug test than yes. 3-5 days for occasional use and up to 2 weeks for daily use for atleast a month