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Ethanol concentration in gastric fluid (24-hour quantitative measurement)

Published: August 9, 2026Updated: August 17, 2026

This test measures the amount of alcohol (ethanol) present in your stomach over a 24-hour period, helping doctors assess alcohol exposure or withdrawal.

Quick summary

["This test helps track alcohol use or withdrawal symptoms by checking stomach fluid for alcohol levels over time."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 17, 2026Editorial policy

Key facts at a glance

LOINC
61095-6
Short code
Ethanol Gast Ql Scn
Synonyms
Ethanol Gast Ql Scn
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Ref low
10
Ref high
40
Critical range
— – 500 N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
screen
CPT
84484
SNOMED
302774002
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 doctor may recommend this test if you’re experiencing symptoms like nausea, tremors, or confusion that could be linked to alcohol withdrawal. It’s also used in research or clinical studies to monitor alcohol intake in specific populations.

What to Expect Before the Test

No special preparation is needed. You’ll likely have a small tube inserted into your stomach to collect fluid over 24 hours. Follow your doctor’s instructions carefully to ensure accurate results.

How the Test Works

A healthcare provider will place a tube into your stomach to collect fluid over 24 hours. The collected fluid is then tested for ethanol content using a sensitive laboratory method.

What the Results Mean

Results help determine if alcohol was present in your stomach during the testing period. High levels may indicate recent alcohol use or withdrawal symptoms, while low levels suggest minimal exposure.

Reference range

Adult: 10-40 U/LN/A

Specimen: serum

No special preparation required. Avoid fatty meals before the test if possible.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: This test is critical for diagnosing alcohol withdrawal syndromes, assessing alcohol exposure in research settings, or evaluating patients with suspected alcohol-related gastrointestinal issues. It provides objective data to support clinical decisions.

Short name

24-Hour Ethanol in Gastric Fluid

Frequently asked questions

How long does the test take to process results?
Results are typically available within 24 to 72 hours, depending on your lab’s processing schedule. Your doctor will contact you once they’re ready.
Is there any risk or discomfort during the test?
There may be mild discomfort or slight irritation when the tube is inserted, but it usually doesn’t cause significant pain. You’ll be monitored closely to ensure your safety.
Can I drink alcohol before or during this test?
No, avoid alcohol before or during the 24-hour test period to ensure accurate results. Follow your doctor’s instructions regarding dietary or fluid restrictions.
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

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 17, 2026. · Read our editorial policy