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.
Xanax can be detected in hair up to 90 days after the drug was first taken. The accuracy of this test does depend on a few factors, such as the length of the personâs hair at the time of testing, the color of hair, and whether or not hair has been chemically treated.anax doesnât clear the body as quickly as many other drugs. In fact, Xanax can be detectable in urine for up to 6 weeks in heavy users. Plus, the main ingredient in Xanax (alprazolam) takes a fairly long time to absorb once itâs in the body, so even small doses can be detectable for over a week.