Glucose, Serum (High-Protein Sample, 75 µg/mL Positive Control)
This test measures the amount of glucose (sugar) in your serum sample, often used to verify the accuracy of your blood glucose monitoring system or lab equipment.
["This test helps ensure your glucose measurements are reliable for managing diabetes or other conditions requiring precise blood sugar tracking."]
Key facts at a glance
- LOINC
- 55351-1
- Short code
- Glucose 1.5h p 75 g Glc PO SerPl-sCnc
- Synonyms
- Glucose 1.5h p 75 g Glc PO 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 Is This Test Done?
Your healthcare provider may order this test to confirm that lab equipment or continuous glucose monitors (CGMs) are functioning correctly. It’s sometimes included in quality control checks for glucose testing systems, especially if you use home blood glucose meters or require frequent monitoring.
What Does the Result Mean?
The result indicates whether the glucose measurement process is accurate. A positive control value (75 µg/mL) is used as a benchmark—if the test result matches expectations, your system is likely working properly. If not, further calibration or equipment checks may be needed.
How Is This Test Performed?
A small blood sample is drawn from your arm, and the serum portion is tested for glucose content using an immunoassay method. This process helps detect any systematic errors in glucose detection.
What Are Common Causes of Abnormal Results?
Abnormal results may suggest issues with the testing device, improper sample handling, or contamination. If your glucose meter or lab results are frequently off, this test can help identify whether the problem lies with the equipment itself.
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.
Clinical Significance
Short name
Serum Glucose (Control Check)
Frequently asked questions
How often should I get this test?
What if my result is outside expected ranges?
Does this test require fasting?
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