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Acetoacetate in Urine (Qualitative)

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

This test checks for the presence of acetoacetate, a chemical produced when the body breaks down fat for energy, often seen in conditions like diabetes or starvation.

Quick summary

["Detects abnormal fat metabolism that may signal metabolic stress or uncontrolled blood sugar."]

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

Key facts at a glance

LOINC
27028-0
Short code
Ketones 2h p chal Ur Ql Strip
Synonyms
Ketones 2h p chal 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 This Test Is Done

Your doctor may order this test if you have symptoms like excessive thirst, frequent urination, unexplained weight loss, or nausea/vomiting. It’s also used to monitor people with diabetes, especially those who may be at risk of diabetic ketoacidosis—a serious condition requiring immediate medical attention.

What to Expect Before the Test

No special preparation is needed. You’ll provide a small urine sample in a clean container. If you’re pregnant, breastfeeding, or have kidney issues, let your doctor know before testing.

What the Results Mean

Positive results (presence of acetoacetate) indicate your body is using fat as a primary energy source, which can happen with high blood sugar, fasting, or certain metabolic disorders. Negative results mean no detectable acetoacetate in your urine.

Common Causes of Positive Results

Conditions like uncontrolled diabetes, starvation, severe illness, or alcohol withdrawal can lead to elevated ketone levels. Rarely, it may also occur in people with certain genetic disorders or eating disorders.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Urine Ketones (Qualitative)

Frequently asked questions

How often should I get this test?
Your doctor will determine frequency based on your health status. For example, people with diabetes may test weekly during illness or between scheduled blood sugar checks. If you’re not diabetic, this test is rarely routine unless symptoms suggest metabolic stress.
Can I drink water before the test?
Yes, you can drink plenty of water before the test. However, avoid excessive fluids right before collection, as it may dilute the sample. If you’re unsure, ask your lab staff.
What if my results are positive?
If positive, follow your doctor’s advice immediately. They may recommend adjusting medications, increasing fluids, or monitoring blood sugar closely. Seek emergency care if you experience confusion, rapid breathing, or severe nausea/vomiting—these could signal diabetic ketoacidosis.
  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