How Long Can Cocaine Be Detected By A Mouth Swab?

The detection is dependent on different variables among which the major issue is of the dosage. For mouth swab test the cocaine will still be detected up to 3 to 4 days. The duration is like 72 to 78 hours.

Depending upon the sensitivity of the equipment used for drug testing the cocaine can be detected fro a duration of 2-4 days. But the level of usage plays a vital role.

I know someone who tested positive for cocaine {crack} after  6 days from use

A friend of mine also tested positive longer than that on a probation swab test, it was almost 10 days later.  Granted he was a very heavy crack smoker, and was 5'5 and weighed 180 or so lbs.  Metabolism plays a huge roll in drug elimination, slow metabolism, longer detection time, same with dosage, higher dosage, longer detection time. Combine the two....may almost double widely accepted detection times.  Scientific journals have shown this time and time again.  People consistantly test positive 5-10 days on a drug test after heavy use.

I just failed a swab test, I'm 5'7'' with a fast metabolism. From a 13days ago last usage.