Glucose in Serum (24-hour Profile)
This test measures your blood sugar levels over a 24-hour period to help assess how your body manages glucose, especially important for those with suspected diabetes or insulin resistance.
["Understanding your blood sugar trends over time helps doctors diagnose and manage conditions like diabetes or metabolic disorders."]
Key facts at a glance
- LOINC
- 11936-2
- Short code
- GA from HL.Jeanty84
- Synonyms
- GA from HL.Jeanty84
- 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-jeanty
- 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 excessive thirst, frequent urination, unexplained weight changes, or if you have a family history of diabetes. It can also be used to monitor blood sugar control in people already diagnosed with diabetes or metabolic disorders.
What to Expect Before the Test
No special preparation is typically needed, but you may be asked to fast for 8–12 hours before the first blood draw. Follow your doctor’s instructions carefully to ensure accurate results. You’ll have several blood samples drawn at different times throughout the day.
How the Test Works
Blood is collected from a vein in your arm at scheduled intervals (often including fasting and post-meal times). The glucose levels in your serum are measured using an immunoassay method to detect glucose concentration.
What the Results Mean
The results provide a detailed picture of how your body responds to food and rest. Elevated or fluctuating levels may indicate diabetes, insulin resistance, or other metabolic issues. Your doctor will interpret these results in the context of your symptoms and medical history.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
This test is critical for diagnosing diabetes, prediabetes, or other glucose metabolism disorders. It helps identify whether your body produces enough insulin, how efficiently it uses glucose, or if there are other metabolic imbalances affecting blood sugar regulation. Over time, abnormal glucose patterns can contribute to complications like nerve damage, kidney issues, or cardiovascular disease.
Short name
24-Hour Serum Glucose Profile
Frequently asked questions
How often should I have this test?
What does a normal range mean for this test?
Can I eat or drink anything before the blood draws?
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