U.S. doctors online nowAsk doctors free
A 50-year-old member asked:

Docs, could a blood test tell the difference between xanax (alprazolam) and valium?

1 doctor answer2 doctors weighed in
Dr. Susan Arnoult
Family Medicine 26 years experience
Yes: There are very specific toxicology screens on blood that can detect levels of specific drugs such as xanax (alprazolam) and valium.
Last updated Jun 11, 2014

Disclaimer:

Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.