Determining how long cocaine stays in your system involves several factors. Body Mass Index (BMI), metabolic rate, frequency of cocaine use, and amount cocaine ingested.

Benzoylecgonine, which is produced after ingestion of cocaine, differs from marijuana in the regard that benzoylecgonine is water soluble. This means cocaine is flushed from the body more quickly than marijuana.

However a person with a larger BMI will drug test positive for cocaine longer than a person with less body fat. In addition a person with a lower BMI whom uses cocaine everyday would most likely test positive for cocaine use longer than a person with a higher BMI.

These are the major factors which contribute to how long cocaine stays in your system. Now we can estimate with more certainty how long the body will continue to show evidence of cocaine usage. Cocaine can be detected by drug testing for up to 5 days in most instances, however based on the above information cocaine could be detected for shorter or longer periods of time. Some people may show evidence of cocaine usage for periods of time far greater than 5 days, and in extreme cases up to 30 days.