Understanding Your Laboratory Test: A Patient Guide to What It Measures and What to Expect
A screening test to detect the presence of benzodiazepines (a class of sedative medications) in saliva or oral fluid.
{"This test checks if benzodiazepine medications are present in your saliva","Benzodiazepines are commonly prescribed for anxiety, sleep disorders, and muscle relaxation","The test is often used for monitoring medication compliance or detecting drug misuse","Results are typically reported as positive or negative","Follow your healthcare provider's instructions regarding medication before testing"}
Key facts at a glance
- LOINC
- 72633-1
- Short code
- BENZSAL
- Synonyms
- Benzodiaz Sal Ql Scn
- Category
- chemistry
- Sample
- serum
- Container
- Saliva/oral fluid collection device (e.g., Quantisal, Intercept, Saliva-Sampler, or equivalent drug-testing oral fluid collection kit)
- Units
- N/A
- Ref low
- 1
- Ref high
- 10
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 1–99 years
- Method
- screen
- CPT
- 80307
- SNOMED
- 442630007
- Specimen volume
- 1-2 mL of oral fluid (minimum volume varies by collection device)
- Stability
- Room temperature: up to 7 days (device-dependent); Refrigerated (2-8°C): up to 14 days; Frozen (-20°C or below): up to 30 days. Follow manufacturer specifications for the specific collection device.
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
This test is a laboratory analysis that gives your healthcare provider important information about your health. Depending on the type of sample collected, the results can show how well certain organs are working, whether an infection or other condition may be present, or how your body is responding to a treatment you are currently receiving.
The Benzodiazepine Saliva Test is a screening test that detects the presence of benzodiazepines in your saliva (also called oral fluid). Benzodiazepines are a class of prescription medications commonly used to treat anxiety, insomnia, seizures, and muscle spasms. Examples include diazepam (Valium), lorazepam (Ativan), alprazolam (Xanax), and clonazepam (Klonopin).
The test is performed by a trained member of our clinical staff. In most cases, a small sample of blood is drawn from a vein in your arm using a sterile needle, although some tests use a urine, saliva, or swab sample instead. The collection usually takes only a few minutes, you may feel a brief pinch, and you can normally return to your regular activities right away while the sample is sent to the laboratory for analysis.
A healthcare professional will collect a sample of your saliva by placing a special collection device in your mouth or under your tongue. The sample is then sent to a laboratory for analysis. The test uses screening methods to determine whether benzodiazepine drugs or their metabolites are present in the sample.
Your doctor may order this test to help find the cause of symptoms you are experiencing, to screen for a condition before it leads to problems, or to monitor a known health issue over time. The results can also guide treatment decisions, show whether your current therapy is working as expected, and help your care team follow your overall health with greater confidence.
Your healthcare provider may order this test for several reasons: to monitor medication compliance if you are prescribed benzodiazepines, to detect potential drug misuse or abuse, to evaluate unexplained symptoms that may be related to medication use, or as part of a routine drug screening for employment or legal purposes.
Reference range
Negative (cutoff typically 1-10 ng/mL depending on assay and specific benzodiazepine; presumptive negative result below assay threshold)N/A
No special preparation required. Patient should avoid eating, drinking, or oral hygiene product use for at least 10 minutes prior to saliva collection. Do not place anything in the mouth prior to specimen collection.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
A positive result indicates that benzodiazepines were detected in your saliva sample. This may be expected if you are currently taking prescribed benzodiazepine medication. A negative result suggests that no benzodiazepines were detected at the time of testing. It's important to note that this is a screening test, and positive results may require confirmatory testing for specific medications. The presence of benzodiazepines can affect alertness, coordination, and cognitive function, so healthcare providers use these results to make informed decisions about your treatment and safety.
Frequently asked questions
Do I need to fast before this test?
How long do benzodiazepines stay detectable in saliva?
Will a positive result mean I am misusing my medication?
Can this test detect all types of benzodiazepines?
What should I tell my healthcare provider before the test?
Sources
- 1
- 2
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy