Nothing in the Reference Manual 2006, but I did find the below info doing a search:
"One of the most common methods of escaping detection when using anabolic steroids is simply discontinuing the use of oral AAS several days prior to a drug test. Oral AAS, such as Anavar, Winstrol (tablets), and Dianabol, are usually undetectable 3 to 4 days of after cessation. Injectable steroids usually have a much longer detection interval. Metabolites of nandrolone have been found in the urine of some athletes after 2 years it was reportedly last used. Stanozolol (Winstrol-V) has been detected in the urine of an athlete 4 months after cessation of its injection (Di Pasquale, 1992a). Oral AAS metabolites can be cleared from the body in only fourteen days after discontinuing use and are therefore more commonly used when drug testing is a concern (Council on Scientific Affairs, 1988). Incidentally, many oral AAS are more highly associated with liver abnormalities and adverse psychological changes (Council on Scientific Affairs, 1988; Bahrke, Yesalis, & Wright, 1990)."