How long does cocaine stay in your system?

If someone eats concaine, how long it stays in your systems, and is the first time they done it
this person told me she done cocaine on Saturday, and was drug test on Thursday, she wants to know if she will be okay,

9 days

yup, it usually takes 48 hours to clear your system completely. Cocaine is not what they are searching for. They are looking for marijuana users.

depends on the quality the quantity usually 3 days but could be 3 weeks. I recommend at home drug test you can buy from walgreens

whoever says more than three days doesnt know nuthing. its 72 hours. and if you need to clean your body from weed or coke drink Covert Labs Strip NC™ FROM your neares GNC store.

They are messing with you, it's 30 days at least for all drugs. Cocaine is worse than marijuana and marijuana takes 30 days to leave you system, or maybe even 90.

72 hours max. Anything else someone tells you has never been there!!

It is 72 hours max. The only differance would be if you did it and didn't drink anything for 3 days. But normal diet and fluids it'll be gone in 3 days. Im so tired of people posting stupid answers and scaring the hell out of people by saying things like 30 days, no. Its 72 hours. I've been randomly tested 80 hours or so after using and it was clean. My test went to a lab too not an at home one. It was fine. Also, the metabolites they test can only be found for 72 hours. I think most people are clean after 24 to 48 hours after a single use but 72 is safe. Don't believe everything you read where any numbskull can write whatever they want, there's actually government medical studies online to back this. Search for them.

Here's a link to a .gov site of a study done to see how long patients tested positive for... read this and stop reading what clueless people say. http://www.ncbi.nlm.nih.gov/pubmed/11384570

Most of the time employees are looking for mararjuana users. it Can take 2 to weeks to get totally rod of it but if its something not quite a common as cocaine, then you should be in the clear.