Benzodiazepines, Serum
- Laboratory
- Quest Diagnostics
- Test code
- 70071
- Specimen
- Serum
- Fasting
- Not stated
- LOINC
- 10343-2, 27921-6, 32649-6, 3312-6, 3457-9, 3494-2, 3537-8, 3548-5, 3724-2, 3821-6, 3886-9, 4069-1, 9652-9, 9776-6
- Turnaround
- Set up: Tues, Thurs, Sat (10:00 a.m.); Report available: 1-3 days
Laboratory assay overview
Benzodiazepines are widely used as anxiolytics, sedative- hypnotics, muscle relaxants, and anticonvulsants. Benzodiazepines include drugs such as diazepam Valium®, chlordiazepoxide Librium®, oxazepam Serax®, lorazepam Ativan®, alprazolam Xanax®, clonazepam Clonopin® and triazolam Halcion®. Many common benzodiazepines are detected in urine by their metabolites oxazepam and nordiazepam. Psychological and physiological addictions, misuse and abuse of benzodiazepines have been described.
Quest Diagnostics population reference ranges
Quest Diagnostics calculates these statistical intervals for this specific assay and demographic group, not as universal optimal targets.
| Population | Range |
|---|---|
| Temazepam | 50-1000 ng/mL |
| Oxazepam | not stated |
| Therapeutic | 200-500 ng/mL |
| Potentially toxic | >2000 ng/mL |
| Chlordiazepoxide | 100-3000 ng/mL |
| Norchlordiazepoxide | 100-3000 ng/mL |
| Nordiazepam | 100-1500 ng/mL |
| Alprazolam | 10-50 ng/mL |
| Alpha-Hydroxyalprazolam | 5-25 ng/mL |
| Alpha-Hydroxytriazolam | 5-20 ng/mL |
| Clonazepam | 30-60 mcg/L |
| Desalkylflurazepam | 30-150 ng/mL |
| Diazepam | 100-1500 ng/mL |
| Lorazepam | 50-240 ng/mL |
| Midazolam | 50-600 ng/mL |
| Triazolam | 5-20 ng/mL |
View complete laboratory reference notes
Temazepam 50-1000 ng/mL Oxazepam Therapeutic 200-500 ng/mL Potentially toxic >2000 ng/mL Chlordiazepoxide 100-3000 ng/mL Norchlordiazepoxide 100-3000 ng/mL Nordiazepam 100-1500 ng/mL Alprazolam 10-50 ng/mL Alpha-Hydroxyalprazolam 5-25 ng/mL Alpha-Hydroxytriazolam 5-20 ng/mL Clonazepam 30-60 mcg/L Desalkylflurazepam 30-150 ng/mL Diazepam 100-1500 ng/mL Lorazepam 50-240 ng/mL Midazolam 50-600 ng/mL Triazolam 5-20 ng/mL
Quest Diagnostics test directory, test code 70071