How long does crack cocaine stay in urine?

Crack cocaine is present within the urine of the user for approximately four days following use.  This can vary, however, depending on other factors such as the amount used, frequency of use, age, and other health issues. 

Although crack cocaine may be undetectable in urine after approximately four days, it may still be present in other areas of the body. 

Blood

Crack cocaine is usually emitted from the blood before urine, and will be present for approximately 48 hours following use.

Hair

On the other hand, crack cocaine can remain present within the user's hair for years, although the average amount of time is approximately three months.

Crack cocaine is a very addictive and destructive drug.  If you're struggling to free yourself from crack cocaine, you should speak to your doctor for further advice.