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Glucose, 24-Hour Urinary Collection (Total)

Published: August 9, 2026Updated: August 16, 2026

This test measures the total amount of glucose (sugar) excreted in your urine over a full day. It helps assess how well your body is handling glucose, which can be important for managing conditions like diabetes.

Quick summary

This test helps track urinary glucose loss, useful for diabetes management.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
30346-1
Short code
Glucose 3h p 1.2 g/kg Lac PO SerPl-mCnc
Synonyms
Glucose 3h p 1.2 g/kg Lac PO 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 Is Done

Your healthcare provider may order this test if you have diabetes or are at risk for it. It can help check for conditions like diabetic nephropathy (kidney damage) or other metabolic issues where glucose might appear in urine unexpectedly. It may also be used to monitor how well your diabetes treatment is working over time.

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 and ending the next morning. Use a clean container and keep it refrigerated to prevent bacterial growth. Follow your provider’s instructions carefully to ensure accurate results.

How the Test Works

The collected urine is tested for glucose levels using a method that detects the presence of sugar. This test helps determine if your body is excreting glucose in amounts that could indicate poor kidney function or other metabolic issues.

Possible Results and Interpretation

Higher-than-expected urinary glucose could signal kidney problems, poor insulin function, or other metabolic disorders. Lower-than-expected results might raise questions about dietary intake or how well your body absorbs glucose. Always discuss results with your healthcare provider.

Reference range

Fasting: 70-100 mg/dLN/A

Specimen: serum

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.

Clinical Significance

Short name

24-Hour Urine Glucose

Frequently asked questions

What does a high urinary glucose level mean?
A high urinary glucose level may suggest kidney issues (like diabetic nephropathy), where your kidneys aren’t filtering glucose properly, or it could indicate other metabolic conditions. It’s important to discuss these findings with your doctor to determine the best next steps.
How often should I get this test?
The frequency depends on your health condition. If you have diabetes, your doctor may recommend this test periodically to monitor kidney function and overall glucose metabolism. Follow your healthcare provider’s advice for scheduling.
Can I eat or drink anything before the test?
Yes, you can eat and drink normally before collecting your urine. However, avoid excessive sugar or caffeine before the test to avoid influencing results. Always follow your provider’s specific instructions for the best accuracy.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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.

Medical Disclaimer

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