Crack lasts for 1-2 hours after administration (depending on the dose) but the euphoric high lasts for about 5-15 minutes. More on the REAL effects of crack here.
crack drug testing
Crack can stay in your system for days to weeks after use. Chronic crack cocaine use can result in detectable levels in your system for weeks in urine, sweat, and saliva samples. More about crack’s detection time here.