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Urine Ketones (Qualitative)

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

This test checks for the presence of ketones in your urine, which can indicate your body is breaking down fat for energy instead of glucose, often seen in conditions like diabetes or starvation.

Quick summary

["Ketones in urine may signal metabolic issues needing medical attention."]

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

Key facts at a glance

LOINC
2514-8
Short code
Ketones Ur Ql Strip
Synonyms
Ketones Ur Ql Strip
Category
chemistry
Sample
urine
Container
Sterile urine container
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
test-strip
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 Is This Test Done?

Your healthcare provider may order this test to monitor conditions like diabetes, uncontrolled weight loss, or eating disorders where fat metabolism can become abnormal. It can also help assess dehydration or other metabolic disturbances.

What Does a Positive Result Mean?

A positive result (ketones detected) suggests your body is producing excess ketones, which can be harmful if left untreated. This may require adjustments to your diet, medication, or lifestyle.

What Does a Negative Result Mean?

A negative result means no ketones were found in your urine sample, but this does not rule out other metabolic issues. Follow-up testing or monitoring may still be needed.

How Is This Test Performed?

You’ll provide a urine sample (usually a midstream clean-catch or catheterized sample). A small test strip is dipped into the urine, and you’ll compare the color change to a provided chart to determine if ketones are present.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Urine Ketone Test

Frequently asked questions

How often should I expect this test?
The frequency depends on your medical condition. For example, people with diabetes may test urine ketones regularly during illness, high-carb diets, or if blood sugar is very high.
What should I do if my test shows ketones?
Contact your healthcare provider immediately. They may recommend adjusting your diet, increasing fluids, or starting insulin therapy, depending on your situation.
Can I eat or drink before this test?
Yes, you can eat and drink normally before providing the urine sample. However, avoid excessive alcohol or high-fat foods, as they may affect ketone levels.
  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