Acetone in Urine (Qualitative)
This test checks for the presence of acetone, a chemical produced when the body breaks down fat for energy, often seen in conditions like diabetic ketoacidosis or starvation.
["Detecting ketones in urine can help identify when your body may be using fat as fuel instead of sugar, which can be a warning sign for serious health issues."]
Key facts at a glance
- LOINC
- 18235-2
- Short code
- Ketone Solvents Bld
- Synonyms
- Ketone Solvents Bld
- Category
- chemistry
- Sample
- whole-blood
- Container
- Lavender-top (EDTA)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Specimen volume
- 3 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h
- Hemolysis max
- 0
- Lipemia max
- 0
- Icterus max
- 0
- TAT
- 4–24 hours
- Order
- routine
Why This Test Matters
Ketones in urine can signal metabolic imbalances. While small amounts may occur normally during fasting or exercise, larger amounts can indicate dangerous conditions like diabetic ketoacidosis, where the body struggles to use sugar properly and turns to fat for energy instead. This can lead to severe dehydration, high blood sugar, and even coma if untreated.
When You Might Need This Test
Your doctor may order this test if you have symptoms like excessive thirst, frequent urination, nausea, vomiting, or unexplained weight loss. It’s also commonly used in people with diabetes to monitor blood sugar control or in those who may be at risk for metabolic disorders.
How the Test Works
The test involves collecting a small sample of your urine. The sample is tested for acetone using a chemical reaction that changes color, indicating whether ketones are present. This is a simple dipstick test often done in a doctor’s office or clinic.
What to Expect Before the Test
No special preparation is usually needed, but if you’re taking medications that affect blood sugar or metabolism, let your doctor know. Avoiding certain foods or drinks (like alcohol or sugary beverages) that might influence ketone levels isn’t typically required, but your doctor may give specific instructions based on your situation.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance
Short name
Urine Ketones (Qualitative)
Frequently asked questions
What does a positive result mean?
What does a negative result mean?
How often should I get this test?
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