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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 may 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 can signal metabolic issues that need medical attention."]

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

Key facts at a glance

LOINC
57734-6
Short code
Ketones Ur Ql Strip.auto
Synonyms
Ketones Ur Ql Strip.auto
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-automated
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 Is Done

Doctors may order this test to monitor conditions that cause the body to produce extra ketones, such as uncontrolled diabetes, prolonged fasting, or certain metabolic disorders. It can also help assess whether you’re responding well to treatment for these conditions.

What to Expect During the Test

You’ll provide a urine sample, typically collected in the morning. The test involves a simple dipstick that changes color if ketones are present. No special preparation is needed, but drinking plenty of water beforehand can help ensure an accurate result.

How the Results Are Interpreted

The test result is qualitative (positive or negative) rather than a numerical value. A positive result means ketones were detected, while a negative result means they were not. Your healthcare provider will discuss the meaning of your result based on your medical history and symptoms.

When to Follow Up

If you have diabetes or another condition that may cause ketones, follow your doctor’s advice about retesting. If you’re experiencing symptoms like nausea, vomiting, or unusual fatigue alongside a positive test, contact your healthcare provider immediately.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Urine Ketone Test

Frequently asked questions

What causes ketones to appear in urine?
Ketones in urine most commonly appear when your body uses fat for energy instead of glucose, often due to low blood sugar (hypoglycemia), uncontrolled diabetes, prolonged fasting, severe illness, or excessive exercise.
What should I do if my urine test shows ketones?
If you have diabetes or another condition, check with your doctor or healthcare provider. They may recommend adjustments to your medication, diet, or activity level. If you’re not diabetic and experience symptoms like nausea, dizziness, or extreme thirst, seek medical attention right away.
Can I drink water before giving my urine sample?
Yes, drinking plenty of water before collecting your urine sample can help ensure a representative result. However, avoid excessive fluid intake just before testing, as it may dilute the sample unnecessarily.
  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