Glucose, 24-Hour Urinary Excretion (Total)
This test measures the total amount of glucose (sugar) excreted in your urine over a 24-hour period. It helps assess how well your body is handling glucose, which can indicate diabetes or other metabolic conditions.
["This test helps doctors check if your body is properly managing blood sugar levels over time."]
Key facts at a glance
- LOINC
- 1516-4
- Short code
- Glucose 2h p 100 g Glc PO Ur-mCnc
- Synonyms
- Glucose 2h p 100 g Glc PO Ur-mCnc
- Category
- glucose
- Sample
- urine
- Container
- Sterile urine container
- Units
- N/A
- Ref low
- 70
- Ref high
- 100
- Critical range
- 50 N/A – 400 N/A
- Fasting
- true
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- CPT
- 82947
- SNOMED
- 260395008
- 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 they suspect you have diabetes, prediabetes, or another condition affecting how your body processes glucose. It can also be used to monitor long-term blood sugar control in people with diabetes.
What to Expect Before the Test
You’ll need to collect all urine for a full 24-hour period, typically starting after midnight and ending the next midnight. Drink plenty of fluids to help your urine flow, but avoid sugary drinks or foods that could affect the results. Follow your doctor’s instructions carefully.
How the Test Works
A sample of your urine is collected and analyzed to measure the total glucose content. The test does not involve drawing blood but requires precise timing and collection of all urine output.
What the Results Mean
Results are interpreted by comparing the total glucose excreted to expected values for healthy individuals. Higher than normal amounts may suggest diabetes or poor glucose control, while lower amounts might indicate restricted urine output or other factors.
Reference range
Fasting: 70-100 mg/dLN/A
Fasting for 8-12 hours required. Water is permitted. Avoid chewing gum and smoking before the test.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
This test provides a broader picture of glucose metabolism than a single blood test. Elevated urinary glucose can indicate uncontrolled diabetes, while consistently low levels may raise concerns about dehydration or other metabolic issues. It’s particularly useful for monitoring long-term trends in blood sugar levels in people with diabetes.
Short name
24-Hour Urine Glucose Test
Frequently asked questions
How is this test different from a standard blood glucose test?
What should I do if I miss any urine during the 24-hour collection?
Can I take medications or supplements that might affect 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