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Hello,I am Dr. Aren and I will help with your query.Xanax has a half life of 9-16 hours,that would be time for the drug to become half in the body.Therefore it will take approximately 7-10 days(fastest clearance would take 4 days.) for the drug to be eliminated adequately from the body so as not to show up on the urine test.If you are taking the drug regularly,it may take longer,upto 28-30 days for the drug to clear from the body.A single dose of 2 mgms may be cleared as fast as in 4 days,but assume a week in most cases to be on the safer side.
A lower dose like 0.25mgms may be cleared faster,but since you are taking it regularly ,assume 7-14 days for complete clearance as regular doses lead to accumalation of the drug and its metabolites.
Do you need more information before you give me a positive rating of 4 or 5 stars?Thanks.