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Urine Ketones (Acetoacetate, Beta-Hydroxybutyrate, Acetone) Quantitative

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

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.

Quick summary

["Ketones in urine can signal potential health concerns, especially if they appear frequently or in high amounts."]

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

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?
A positive result means ketones were detected in your urine, which could indicate your body is breaking down fat for energy. This may happen with diabetes, fasting, illness, or other metabolic factors. Your provider will discuss next steps based on your symptoms and overall health.
Can I eat or drink before this test?
No special diet or fasting is required for this test, but drinking plenty of water can help ensure a representative urine sample. Avoid excessive caffeine or strong beverages that might alter results.
How often should I get this test?
Your healthcare provider will determine how often you need this test based on your health condition. For example, people with diabetes may check ketones regularly, while others may only need it occasionally if symptoms arise.
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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 16, 2026. · Read our editorial policy