+29 How Long Does Cocaine Stay In Hair Folicle Ideas. In fact, this is the detection window for urine for most casual users. Web cocaine can typically be detected in hair samples for up to 90 days after use.
However, chronic or heavy cocaine users may have a much longer detection window. One time user can test positive for drug use from 5 to 10 days after use to 90 days. A heavy user can test positive on a urine test for up to 2 weeks.
