Glucose, 24-Hour Urinary Excretion (Total)
This test measures the total amount of glucose (sugar) found in your urine over a 24-hour period. It helps assess how much glucose your body is excreting, which can be important for managing conditions like diabetes.
["This test helps track how well your kidneys are filtering glucose and supports diabetes management."]
Key facts at a glance
- LOINC
- 47912-1
- Short code
- GH 30M p GRF SerPl-aCnc
- Synonyms
- GH 30M p GRF SerPl-aCnc
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- CPT
- 86430
- 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 diabetes or are at risk for it. It can also be used to check how well your kidneys are working or to monitor long-term 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 you wake up in the morning. Drink plenty of fluids but avoid adding extra sugar to your diet during this time. Your sample will be sent to the lab for analysis.
How the Test Works
The test measures the total glucose excreted in your urine, combining results from multiple urine samples collected throughout the day. This provides a clearer picture of your body’s glucose handling compared to single-point measurements.
What the Results Mean
Results are usually reported as the total amount of glucose excreted in grams or milligrams over 24 hours. High levels may indicate poor kidney function or uncontrolled diabetes, while normal levels suggest effective glucose filtering.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance: This test is critical for diagnosing and managing diabetes, particularly in assessing nephropathy (kidney disease) related to high blood sugar. Elevated urinary glucose can also signal other metabolic conditions or kidney issues that require further evaluation.
Short name
24-Hour Urine Glucose
Frequently asked questions
What causes abnormal urinary glucose levels?
How often should I get this test?
Can I eat or drink anything 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