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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 excreted in your urine over a 24-hour period. It helps assess how much sugar your body is filtering through your kidneys.

Quick summary

["Helps identify kidney function and glucose metabolism over time."]

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

Key facts at a glance

LOINC
11915-6
Short code
GA from CRL.Yeh88
Synonyms
GA from CRL.Yeh88
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
us-estimated-from-crl-yeh
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

Doctors may order a 24-hour urine glucose test to evaluate kidney function, detect conditions like diabetes-related kidney damage, or check for excessive glucose loss in urine (glucosuria). It can also help monitor long-term glucose control in people with diabetes.

What to Expect Before the Test

You’ll need to collect all urine for 24 hours, starting after your first morning void. Store samples in a refrigerator, and bring the entire collection to the lab. Follow your doctor’s instructions precisely to ensure accurate results.

Sample Collection Process

A healthcare provider will guide you on timing and storage. You’ll use a clean container to collect all urine, including the first void of the day. Avoid adding preservatives unless instructed.

What the Results Mean

Results show the total glucose excreted in urine. Elevated levels may indicate diabetes, kidney issues, or other metabolic disorders. Your doctor will interpret results in relation to your medical history and symptoms.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

High urinary glucose levels can signal kidney problems, diabetes, or conditions like Fanconi syndrome. Low levels may suggest poor kidney function or metabolic abnormalities. Always discuss results with your healthcare provider for personalized insights.

Short name

24-Hour Urine Glucose

Frequently asked questions

How is this test different from a random urine glucose test?
A 24-hour urine glucose test measures total glucose lost over a full day, giving a clearer picture of long-term kidney and glucose handling. Random tests only check a single sample, which may not reflect daily patterns.
Can I take medications before this test?
Most medications are fine, but check with your doctor first—some may affect urine glucose levels. Avoid over-the-counter supplements or dietary changes unless approved.
What if I miss any urine during the collection?
Missing urine can skew results. Follow your instructions carefully, and if you accidentally miss a void, contact your lab or doctor immediately to adjust the collection period.
  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