any member of the subphylum Crustacea (phylum Arthropoda), a group of invertebrate animals consisting of some 45,000 species distributed worldwide. Crabs, lobsters, shrimps, and wood lice are among the best-known crustaceans, but the group also includes an enormous variety of other forms without popular names.
It is thought that infrequent, low-dose users may test positive for Xanax within urine for up to 4 days post-ingestion. Frequent, high-dose users of the drug may test positive for Xanax after a full week post-ingestion via a urinalysis. Results from a urinalysis can be confirmed with technology such as GC/MS.
Hi - I'm not a pharmacist. Xanax detectable in urine for how long is a question addressed by others with better credentials than mine. Do keep in mind that the health of the enzyme producing tissues, primarily liver, kidneys, intestines in that order, will have to do with the variability of drug metabolite clearance time.