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Glucose, 24-hour urinary excretion

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

This test measures the total amount of glucose (sugar) excreted in your urine over a 24-hour period.

Quick summary

["Understanding your urinary sugar output can help identify how your body manages blood sugar."]

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

Key facts at a glance

LOINC
33117-3
Short code
GA from HL.Osaka89
Synonyms
GA from HL.Osaka89
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-hl-osaka
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 symptoms like frequent urination, excessive thirst, or unexplained weight changes. It can also help diagnose or monitor conditions like diabetes, kidney issues, or metabolic disorders.

What to Expect Before the Test

You’ll typically collect urine samples throughout the day in a container provided by your lab. Drink plenty of water to help your urine flow smoothly. Avoid foods or drinks that might affect sugar levels (like caffeine or sugary beverages) unless instructed otherwise.

During the Test

The test involves collecting all urine for 24 hours, usually in a special container. The samples are then sent to a lab for analysis. No special preparation beyond hydration is needed, but consistency in urine volume is key.

What the Results Mean

Higher than expected urinary glucose levels may suggest diabetes, kidney problems, or other metabolic conditions. Lower levels might indicate normal glucose handling or conditions like Cushing’s syndrome. Your results will be compared to your healthcare provider’s expectations based on your medical history.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Frequently asked questions

How long does it take to get my results?
Results are typically available within 1–3 business days, depending on lab processing times. Your healthcare provider will discuss them with you during your follow-up visit.
Can I eat or drink anything before the test?
You can eat and drink normally, but avoid sugary foods or drinks unless advised otherwise. Drink plenty of water to ensure adequate urine volume throughout the day.
Will I need to take any special steps during the 24-hour collection?
Yes, collect all urine in the provided container, including first-morning urine. Discard the first void of the day and the first void of the next morning. Label each sample as you go for 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