Urine Ketones (Acetoacetate, Beta-Hydroxybutyrate, Acetone) Quantitative
This test measures the presence of ketones in your urine, which can indicate your body is breaking down fat for energy instead of glucose. Ketones are normal in small amounts but may rise in conditions like diabetes, fasting, or certain metabolic disorders.
["Ketones in urine can signal potential health concerns, especially if they appear frequently or in high amounts."]
Key facts at a glance
- LOINC
- 21356-1
- Short code
- Ketones 3.5h p chal Ur Ql
- Synonyms
- Ketones 3.5h p chal Ur Ql
- Category
- chemistry
- Sample
- urine
- Container
- Sterile urine container
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Specimen volume
- 10 mL
- Stability
- Room temperature: 2h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 0
- Lipemia max
- 0
- Icterus max
- 0
- TAT
- 4–24 hours
- Order
- routine
Why This Test Might Be Ordered
Your healthcare provider may recommend this test if you have symptoms like excessive thirst, frequent urination, unexplained weight loss, nausea, or fatigue. It’s also used to monitor conditions like diabetes, uncontrolled blood sugar, or metabolic disorders like ketoacidosis.
What to Expect During the Test
You’ll provide a urine sample (typically a midstream clean-catch or container sample) in a clinic or at home. The sample is tested for ketone bodies (acetoacetate, beta-hydroxybutyrate, and acetone) using a dipstick or other lab method. No special preparation is usually needed, but hydration may be advised.
What the Results Mean
Positive results (detectable ketones) may mean your body is producing more ketones than usual, which can happen with prolonged fasting, high-fat diets, or certain illnesses. Negative results mean no ketones were detected in this sample.
Common Causes of Ketones in Urine
Ketones can appear due to diabetes (especially type 1), starvation, severe illness, excessive alcohol use, or certain medications. They may also occur during pregnancy or with conditions like starvation or eating disorders.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
Urine Ketones
Frequently asked questions
What does a positive urine ketone test mean?
Can I eat or drink before this test?
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