Glucose in Whole Blood by Enzymatic Method
This test measures the amount of glucose (sugar) present in your blood, which helps monitor blood sugar levels.
["A simple blood test to check your blood sugar, useful for diabetes management or general health monitoring."]
Key facts at a glance
- LOINC
- 2360-6
- Short code
- G6PD WBC-cCnc
- Synonyms
- G6PD WBC-cCnc
- Category
- glucose
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Ref low
- 4.5
- Ref high
- 11
- Critical range
- 2 N/A – 30 N/A
- Fasting
- true
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- CPT
- 85004
- SNOMED
- 900000000000003002
- 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 diagnose or manage conditions like diabetes, check for high or low blood sugar, or evaluate how your body processes glucose. It’s also used in routine check-ups or before certain treatments.
What to Expect Before the Test
You’ll likely have a small needle inserted into your arm or hand to draw a blood sample. If you’re fasting (not eating or drinking except water) for 8–12 hours before the test, your provider will instruct you accordingly. Avoid smoking or strenuous activity right before the draw.
What Happens During the Test?
The blood sample is taken and sent to a lab, where an enzymatic method detects glucose levels. Results are usually available within a few hours or the next day, depending on your lab’s process.
What Do the Results Mean?
Results are compared to general reference ranges (not provided here), which may vary by lab. High levels may indicate diabetes or other metabolic issues, while very low levels could signal hypoglycemia or other conditions. Your provider will interpret results in the context of your health.
Reference range
Adult: 4.5-11.0 x 10^9/LN/A
No special preparation required. Stay well hydrated.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Glucose levels are critical for energy production in your body. Persistently high or low levels can lead to serious health problems, including nerve damage, heart disease, or difficulty with wound healing. Regular monitoring helps prevent complications and guides treatment plans.
Short name
Blood Glucose
Frequently asked questions
How often should I get this test?
What can affect my blood glucose results?
Do I need to prepare for 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