Methamphetamine can typically be detected in urine up to 3-4 days afther use , sometimes longer depending on factors such as frequency of use and individual metabolism and kg. , there are various methods to try to accelerate the process but there's no guaranteed way to completely eliminate it from your system in just 2 days. drinking plenty of water and eating fruits and vegetables , also get some exercise to help your body metabolize the drug more efficiently. but again , 2 days is a short time , better get some time or some clean urine