24-Hour Average Glucose Concentration in Fluid (Rate-Based)
This test measures the average rate of glucose (sugar) levels over a 24-hour period, often used to assess long-term blood sugar control.
["Helps track how your body manages blood sugar over time, useful for diabetes management."]
Key facts at a glance
- LOINC
- 40366-7
- Short code
- Glucose 24h Fld-sRate
- Synonyms
- Glucose 24h Fld-sRate
- 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
What Is This Test Measuring?
Unlike a single blood glucose check, this test evaluates the steady-state glucose levels in your body fluid over a full day. It reflects how consistently your glucose levels stay within a healthy range, which can be influenced by diet, activity, medications, and underlying health conditions like diabetes.
Why Might You Need This Test?
Doctors may order this test if you have diabetes to monitor how well your body is managing glucose over time. It can help identify patterns, such as whether your glucose levels are consistently high or low, or if they fluctuate unpredictably.
How Is the Sample Collected?
A healthcare provider will likely collect a small blood sample from a vein in your arm. The sample is then processed to measure the average glucose rate over 24 hours, often analyzed using a specialized method that tracks glucose changes continuously or through multiple measurements.
What Does the Result Mean?
Results are not provided in absolute numbers but rather as a comparative assessment of your glucose management. Your doctor will interpret the findings in relation to your medical history, symptoms, and other test results to guide treatment decisions.
Reference range
Fasting: 70-100 mg/dLN/A
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 Average Glucose Rate
Frequently asked questions
What causes a 24-hour average glucose test to be ordered?
How is the 24-hour average glucose rate different from a regular blood glucose test?
Can lifestyle changes affect the results of this test?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
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.
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