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Average Glucose Concentration in Whole Blood (24-Hour Profile)

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

This test measures the average level of glucose (sugar) in your blood over a 24-hour period, using a sample of whole blood. It helps assess long-term blood sugar control, often linked to diabetes management.

Quick summary

["This test provides insight into how well your body manages blood sugar over time."]

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

Key facts at a glance

LOINC
27353-2
Short code
Est. average glucose Bld gHb Est-mCnc
Synonyms
Est. average glucose Bld gHb Est-mCnc
Category
glucose
Sample
whole-blood
Container
Lavender-top (EDTA)
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
Method
estimated-from-glycated-hemoglobin
CPT
82947
SNOMED
260395008
Specimen volume
3 mL
Stability
Room temperature: 4h, Refrigerated: 24h
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

Why Is This Test Done?

Doctors may order this test if you have diabetes or prediabetes to monitor your blood sugar control. It can also help evaluate how well medications or lifestyle changes are working to manage glucose levels.

How Is the Test Performed?

A healthcare provider will collect a small blood sample from a vein in your arm. The sample is analyzed to determine the average glucose concentration over 24 hours.

What Does the Test Result Mean?

Results are not provided in absolute numbers but help compare your glucose levels to typical ranges for healthy individuals or those with diabetes. Your doctor will interpret the results in the context of your medical history and other tests.

How Often Should This Test Be Done?

Frequency depends on your health condition. For diabetes, it may be recommended every few months or annually to track progress and adjust treatment plans.

Reference range

Fasting: 70-100 mg/dLN/A

Specimen: whole-blood

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

Average Blood Glucose

Frequently asked questions

What does an average blood glucose test measure?
It measures the average concentration of glucose in your blood over a 24-hour period, providing insight into long-term blood sugar control rather than just a single moment’s reading.
How is the blood sample collected for this test?
A healthcare professional will take a small blood sample from a vein in your arm, similar to other blood tests.
Can this test be done at home?
No, this test requires a professional blood draw in a clinical setting, as it involves measuring glucose levels over time from a whole blood sample.
  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