Glucose, 24-Hour Urinary Collection (Mass Concentration)
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 managing glucose levels, especially important for people with diabetes or kidney function concerns.
["This test helps track urinary sugar loss, which can indicate diabetes or kidney issues."]
Key facts at a glance
- LOINC
- 40040-8
- Short code
- Glucose 28h p chal SerPl-mCnc
- Synonyms
- Glucose 28h p chal SerPl-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 Is This Test Done?
Your healthcare provider may order this test if you have symptoms like frequent urination, excessive thirst, or unexplained weight changes. It’s also used to monitor diabetes management or kidney function, particularly in people with high blood sugar or kidney disease.
What to Expect Before the Test
You’ll need to collect all urine for 24 hours, starting and ending with your first morning urine. Store the sample at room temperature and bring the entire collection to the lab. Follow any specific instructions your provider gives to ensure accurate results.
How the Test Works
The test measures the total glucose present in your urine over the day. Your sample is analyzed using a specialized method (likely enzymatic or chromatographic) to determine the mass concentration of glucose.
What the Results Mean
Results are typically reported as the total amount of glucose excreted in grams or milligrams over 24 hours. High levels may suggest diabetes, poor kidney function, or other metabolic conditions. Low levels might indicate dehydration or restricted glucose intake.
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.
Elevated urinary glucose can signal diabetes (type 1 or 2), kidney problems, or conditions like gestational diabetes. Persistently high levels may require adjustments to diabetes management, such as medication or diet. Low results could raise concerns about dehydration or inadequate glucose metabolism, prompting further evaluation.
Short name
None
Frequently asked questions
What causes abnormal urinary glucose levels?
How often should I get this test?
Can diet or activity affect this test result?
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