Brief Answer:
Commonly urine tests are employed for drug testings

Detailed Answer:
Hello thanks for asking from HCM for your health related queries

I can understand your concern. She was taking 20-30 mg Xanax which is really a high dose. Yes if normal urine test is done then the limits of detection in normal cases is about 7 days irrespective of doses. But ask her to take plenty of water and citrus fruits. This would result in early elimination of drug from her system. Exercise and green tea would also fasten the metabolism and will flush the drug out of her body rapidly.

But if hair test is done then the limit of detection even goes unto 2-3 months and in some individuals longer than that period. But in most drug screens urine test in commonly employed.

Please discuss with her and request her to not to take the Xanax without prescription in near future.

Thanks, I hope this helps you. Take care

---

Brief Answer:
Hair test has long detection period

Detailed Answer:
Hello again and thanks for asking a follow up

If we consider half life of Xanax then it's about 6-24 hours depending upon metabolism, age, sex etc factors in an individual. So normally with in about 7 days drug elimination occurs in most individual.

This is the reason common drug screen with urine test have detection time up to a week. Yes you can catch the drug use by urine test in about a week.

Detection time of hair test is longer even about 2-3 months in some individuals. By hair test drug abuse can be found with ease and these tests are available with most of big labs. Get her random testing done to find out drug use.

Thanks, still have more doubts please ask again.

---

Brief Answer:
She can come positive up to 10 days

Detailed Answer:
Hello again and thanks for follow up

In normal situations test can detect up to 10 days but that also depends upon individuals to individuals.

Thanks

---