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Glucose Concentration in Serum (24-Hour Urine Collection)

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

This test measures the total amount of glucose (sugar) found in your urine over a 24-hour period. It helps assess how well your body is handling glucose, especially if you have diabetes or suspect it.

Quick summary

["This test helps track blood sugar control over time by checking urine glucose levels."]

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

Key facts at a glance

LOINC
74687-5
Short code
Glucose 12h Ur-sCnc
Synonyms
Glucose 12h Ur-sCnc
Category
glucose
Sample
urine
Container
Sterile urine container
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
10 mL
Stability
Room temperature: 2h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

Why This Test Matters

Your doctor may order this test if they suspect diabetes, kidney issues, or other conditions affecting how your body processes sugar. It’s also useful for monitoring long-term blood sugar trends, particularly in people with diabetes.

What to Expect Before the Test

You’ll need to collect all urine for 24 hours, starting and ending with your first morning pee. Store the urine in a clean container, keeping it refrigerated if possible. Your healthcare provider will give detailed instructions.

How the Test Works

The urine sample is analyzed to measure the total glucose present. The test doesn’t involve blood drawing but requires precise urine collection over a full day.

What the Results Mean

Higher-than-normal results may indicate uncontrolled diabetes, kidney problems, or other metabolic conditions. Lower-than-normal results could suggest poor kidney function or other issues. Your doctor will interpret results in the context of your overall health.

Reference range

Fasting: 70-100 mg/dLN/A

Specimen: urine

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.

◆Associated findings1

Short name

24-Hour Urine Glucose

Frequently asked questions

How long does it take to get my results back?
Results are typically available within 1 to 3 business days, depending on your lab’s processing time. Your doctor will contact you once they’re ready to discuss them.
Can I eat or drink normally before this test?
Yes, you can eat and drink as usual, but follow your doctor’s specific instructions for urine collection timing and storage. Avoid special diets unless directed otherwise.
Will I need to fast for this test?
No fasting is required for this urine-based test. The 24-hour collection focuses on measuring total glucose output, not just blood sugar levels.
  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