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Acetone in Urine (Qualitative, 24-Hour Collection)

Published: August 9, 2026Updated: August 16, 2026

This test checks for the presence of acetone, a byproduct of fat breakdown, in your urine over a 24-hour period. It helps identify conditions like uncontrolled diabetes or metabolic stress.

Quick summary

["Detecting acetone can signal serious metabolic issues that require medical attention."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
32547-2
Short code
Ketones SerPl Strip-sCnc
Synonyms
Ketones SerPl Strip-sCnc
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
test-strip
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 Matters: Diabetes Management

Acetone in urine often appears when your body struggles to convert food into energy properly, such as in poorly controlled diabetes. High levels may indicate ketosis, where your body burns fat instead of glucose for fuel.

How the Test Works

You’ll collect your urine over 24 hours in a special container. The test measures acetone concentration using a chemical reaction detected in the lab. Results are qualitative (positive/negative) rather than a specific number.

What to Expect Before the Test

No special preparation is needed, but drink plenty of water to ensure a full urine collection. Avoid using urine dipsticks or home tests for acetone unless instructed by your provider.

Common Causes of Positive Results

Positive acetone results can occur with diabetes (especially type 1 or uncontrolled type 2), starvation, severe illness, or prolonged fasting. It may also appear during pregnancy or after certain medications.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Urine Acetone Test (Screen)

Frequently asked questions

What does a positive result mean?
A positive result means acetone was detected in your urine, which may indicate your body is breaking down fat for energy. This often signals diabetes management needs adjustment, such as increased insulin or dietary changes. Always discuss results with your doctor.
Can I use home urine acetone strips instead?
Home strips can show acetone but may not be as accurate as lab tests. They’re less sensitive and can give false positives or negatives. Your doctor may recommend lab testing for more reliable results, especially if you have diabetes.
How often should I get this test?
Your doctor will determine frequency based on your health. For diabetes, tests may be done regularly to track ketone levels, especially if you’re managing high blood sugar or have symptoms like nausea, vomiting, or unusual thirst.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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.

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 16, 2026. · Read our editorial policy