how long does meth stay in your system
1 Snorting typically takes one to four days. 2  Smoking crystal meth can take anywhere from three to five days to leave your system. 3  When users use crystal meth intravenously, the drug will typically stay in their system for a minimum of 72 horus. The manner in which it is ingested: different ways of ingestion take different amounts of time for the body to process the methamphetamine. 2  Snorting typically takes one to four days. 3  Smoking crystal meth can take anywhere from three to five days to leave your system.