How long for cocaine to leave system?

It is a known fact that crack cocaine leaves the body in approximately 3 to 4 days depending on the usage. If you have smoked up to 4 to 5 days straight spending over 4 thousand dollars then you should be aware that crack will be in your hair, skin, blood and urine for more than 4 days. If you are one that perhaps hit all day just for that day then the drug should leave your body in 3 to 4 days.