Glucose, 8-Minute Postprandial (Serum/Plasma) Concentration
This test measures your blood sugar level 8 minutes after eating. It helps assess how your body responds to food.
["Understand your blood sugar response to meals for better diabetes or metabolic health management."]
Key facts at a glance
- LOINC
- 40196-8
- Short code
- Glucose 8M pre chal SerPl-sCnc
- Synonyms
- Glucose 8M pre chal SerPl-sCnc
- 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
Why This Test Matters
Measuring glucose levels shortly after eating can reveal how efficiently your body processes carbohydrates. This is particularly useful for people with diabetes or those at risk of metabolic disorders.
What to Expect Before the Test
You’ll typically fast overnight before this test, but the 8-minute postprandial sample is collected shortly after you eat a meal. Your healthcare provider will guide you on preparation.
How the Test Works
Blood is drawn from a vein, usually in your arm. The sample is tested for glucose concentration using a specialized immunoassay or enzymatic method to detect the sugar in your blood.
What the Results Mean
Results help identify if your body is managing glucose well after meals. Abnormal results may indicate issues like poor insulin function or other metabolic conditions.
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.
Glucose postprandial testing is critical for diagnosing and managing diabetes, prediabetes, and other metabolic disorders. Elevated levels may signal insulin resistance or delayed glucose absorption, while consistently low levels could indicate inadequate food intake or other metabolic challenges.
Short name
Glucose (8-Min Post-Meal)
Frequently asked questions
When might I need this test?
How long will I need to prepare for this test?
Can I eat or drink anything before the 8-minute sample?
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