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.
A single 0.5 mg dose of Xanax stays in your system for 3 to 5 days. But the longer period of taking Xanax, and the higher the dosages, the longer it will take your system to g â¦ et rid of traces of Xanax. You may sometimes need a month or more to get yourself quite clear of the medication.