Ethanol (Alcohol) in Saliva
This test measures the amount of alcohol present in your saliva, which can help assess recent alcohol consumption or detect alcohol use during certain procedures.
["Saliva alcohol testing helps track recent drinking and may be used in medical settings to ensure sobriety."]
Key facts at a glance
- LOINC
- 109641-1
- Short code
- Ethanol Msmt Sal
- Synonyms
- Ethanol Msmt Sal
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
Why This Test Is Done
Your healthcare provider may order this test to evaluate recent alcohol intake, monitor compliance with sobriety requirements (e.g., after surgery or during treatment), or screen for alcohol use in clinical or research settings. Saliva testing is often preferred for its convenience and quick results.
How the Test Works
A small saliva sample is collected, typically from swabbing the inside of your cheek. The test measures the concentration of ethanol (alcohol) in your saliva using an immunoassay or similar method. Results are usually available within minutes.
What to Expect Before the Test
No special preparation is needed. Avoid eating or drinking immediately before the test, as food and liquids can dilute saliva and affect results. If you’re undergoing a procedure requiring sobriety, follow your provider’s instructions about fasting or avoiding alcohol.
What the Results Mean
Results are expressed in milligrams per deciliter (mg/dL) or similar units. Higher levels may indicate recent alcohol consumption, while lower or zero levels suggest abstinence. Interpretation depends on clinical context (e.g., time since last drink, medical history).
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Saliva ethanol testing is useful for detecting acute alcohol exposure, particularly in situations where blood alcohol levels cannot be obtained (e.g., children, unconscious patients). It’s also used in workplace drug testing, legal proceedings, or medical evaluations where rapid results are critical. False positives or negatives may occur due to factors like mouthwash use or recent eating.
Short name
Saliva Alcohol Level
Frequently asked questions
How long does it take to get results from this test?
Can I eat or drink before this test?
What does a positive result mean?
Sources
- 1
- 2Lab Tests OnlineSource
- 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