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Glucose in urine (qualitative)

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

This test checks whether glucose (sugar) appears in your urine, which can happen if your body isn’t properly removing sugar from your blood.

Quick summary

["Detects abnormal sugar in urine, often linked to diabetes or kidney issues."]

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

Key facts at a glance

LOINC
2349-9
Short code
Glucose Ur Ql
Synonyms
Glucose Ur Ql
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 Might This Test Be Done?

Your healthcare provider may order this test to monitor blood sugar levels indirectly, especially if you have diabetes or symptoms like frequent urination, excessive thirst, or unexplained weight changes. It can also help screen for conditions like kidney problems or gestational diabetes.

How Is the Test Performed?

A small urine sample is collected, usually in the morning, and tested using a dipstick method. The dipstick changes color if glucose is present, which is then interpreted by your provider.

What Does a Positive Result Mean?

A positive result (glucose detected) suggests your kidneys may not be working as expected to filter out sugar, which could indicate diabetes, kidney dysfunction, or other metabolic issues. False positives can occur with certain medications or high urine pH.

What Does a Negative Result Mean?

A negative result means no glucose was detected in the urine sample, which typically aligns with normal kidney function for filtering sugar. However, this alone doesn’t confirm blood sugar levels are normal—other tests (like fasting glucose or HbA1c) may be needed for a full picture.

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.

Clinical Significance: Glucose in Urine Can Signal Underlying Conditions

Short name

Urine Glucose Test (Qualitative)

Frequently asked questions

Why is this test important?
This test helps identify potential diabetes or kidney problems early. Glucose in urine can also be a sign of uncontrolled blood sugar levels, especially in people with diabetes, and may prompt further testing or adjustments to treatment plans.
What if I have diabetes?
If you have diabetes, this test can help monitor your condition by checking if your kidneys are handling excess sugar. Frequent positive results may require closer blood sugar management or evaluation of kidney health.
How often should I get this test?
Frequency depends on your health status. People with diabetes may get this test regularly (e.g., monthly) as part of routine monitoring, while others may need it less often or only if symptoms arise.
  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