How long is xanax detected in a hair test?

Answer:
Most benzodiazepines (Xanax, Valium, Klonopin, Librium, etc.) are detectable in a hair test for up to 90 days...it all depends on the persons weight, gender(believe it or not), health, body chemistry, and how often they used...if it was a one time use it shouldn't be detectable in hair after 45 days or so.
First answer by ID1203114246. Last edit by Marino1990. Contributor trust: 0 [recommend contributor recommended]. Question popularity: 2 [recommend question].