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It is possible for cocaine to be detected in your hair follicle on Oct 22. The detection period in the hair follicle is around 30 to 90 days depending on how much you have used and for how long.
If it was used only once and that too in small amounts like you mention then there is a good chance that you may pass the test.
But it could also be that you fail the test.
So nothing can be said for sure at the moment.
That will not make much of a difference.
So I would not recommend doing anything that would make things more suspicious.