Glucose, 24-Hour Urinary Excretion (Quantitative)
This test measures how much glucose appears in your urine over a full day. It helps assess how well your body is managing glucose levels, especially if you have diabetes or suspect it.
["This test helps track glucose control and identify potential issues with how your body processes sugar."]
Key facts at a glance
- LOINC
- 12632-6
- Short code
- Glucose sp3 DiafP-mCnc
- Synonyms
- Glucose sp3 DiafP-mCnc
- Category
- glucose
- Sample
- serum
- Container
- Red-top tube (SST)
- 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
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
Why This Test Is Done
Your doctor may order this test if you have diabetes, prediabetes, or symptoms like frequent urination, excessive thirst, or unexplained weight changes. It can also be used to monitor long-term glucose management or check for conditions like kidney problems that might affect urine glucose levels.
What to Expect Before the Test
You’ll need to collect all urine for a full 24-hour period, typically starting after midnight one day and ending the same time the next day. Drink plenty of fluids to help urine flow, but avoid sugary drinks or foods that could skew results. Follow your doctor’s instructions carefully for accurate results.
How the Test Works
Urine is collected in a container, and the glucose content is measured in a lab. The test looks for glucose that naturally leaks into urine when blood sugar levels are consistently high, which can happen in diabetes or other metabolic conditions.
What the Results Mean
Results are usually reported as the total amount of glucose excreted in urine over 24 hours. High levels may indicate poor glucose control, while normal or low levels suggest your body is managing sugar well. Your doctor will interpret results in the context of your overall health and medical history.
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.
High urinary glucose excretion can signal uncontrolled diabetes, kidney issues, or other metabolic disorders. It’s a useful tool for doctors to assess long-term glucose management, especially in people with diabetes, and to adjust treatment plans if needed. Low or absent glucose in urine may also warrant further investigation to rule out conditions like dehydration or certain genetic disorders.
Short name
24-Hour Urine Glucose
Frequently asked questions
How often is this test done?
What can affect my results?
Do I need to fast before 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