Glucose, 24-Hour Urinary Collection (Mass Concentration)
This test measures the amount of glucose (sugar) excreted in your urine over a full day. It helps assess how well your body is managing blood sugar levels, especially if you have diabetes or other conditions affecting glucose metabolism.
["Helps track long-term blood sugar control and identify patterns in urinary glucose loss."]
Key facts at a glance
- LOINC
- 40019-2
- Short code
- Glucose 20H p chal SerPl-mCnc
- Synonyms
- Glucose 20H 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 This Test Matters
Glucose in urine can occur when your body struggles to keep blood sugar within normal limits. This test is particularly useful for monitoring chronic conditions like diabetes, where small amounts of glucose may appear in urine even if blood sugar levels are relatively stable.
How the Test Works
A 24-hour urine sample is collected to capture all glucose excreted naturally. The test measures the total glucose concentration in this sample, providing insight into how efficiently your kidneys filter glucose.
Sample Collection
You’ll need to collect all urine for a full 24-hour period, starting and ending with your first morning urine. Store the sample at refrigerated temperatures to preserve accuracy.
What to Expect
No special preparation is needed, but follow your healthcare provider’s instructions carefully. If you’re taking medications that affect urine composition, let them know to avoid interference.
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 may indicate poor glucose control, kidney issues, or conditions like diabetes. Persistently high levels could signal underlying metabolic problems that require medical evaluation.
Short name
24-Hour Urine Glucose
Frequently asked questions
What causes abnormal results?
How often should I get this test?
Can I eat or drink before the 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