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 MY NAME IS MAnny i TOOK 1 XANAX I 1 TO know how long xanax 0.25 stay in your system i asking this because i took 1 xanax and 13 days later i took a drug test i not i xanax user i yes took 1 me been stupid please some body tell me how long.