Glucose
What is it?
Glucose is the main energy source for cells. Levels are regulated by insulin. Elevated levels may indicate prediabetes or diabetes.
Normal ranges
Fasting: 3.3–5.5 mmol/L (70–100 mg/dL).
Units: mmol/L
Causes of deviations
Low levels:
Fasting, insulin overdose, liver disease.
High levels:
Diabetes, prediabetes, stress, certain medications.
When to see a doctor
If fasting level is above 6.1 mmol/L or below 3.0 mmol/L.
This information is for educational purposes and does not replace medical advice.
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