Question 1

What is a normal blood sugar level?

Accepted Answer

For non-diabetic adults: fasting 70–99 mg/dL (3.9–5.5 mmol/L), 2 hours after eating <140 mg/dL (<7.8 mmol/L). For people with diabetes, ADA targets are fasting 80–130 mg/dL and <180 mg/dL 1–2 hours postprandial.

Question 2

How is A1C estimated from blood sugar readings?

Accepted Answer

The eAG (estimated average glucose) formula from the ADAG study: A1C (%) = (eAG + 46.7) ÷ 28.7, where eAG is your average glucose in mg/dL. Example: 154 mg/dL average ≈ 7.0% A1C.

Question 3

What is time in range?

Accepted Answer

Time in Range (TIR) is the percentage of readings within your target glucose range (typically 70–180 mg/dL). ADA recommends >70% TIR for most adults with diabetes; >50% for older or high-risk individuals.

Question 4

How often should I check my blood sugar?

Accepted Answer

It depends on your type and treatment: type 1 typically 4–10 times daily, type 2 on insulin 1–4 times daily, type 2 on oral meds varies. Always follow your healthcare provider's recommendation.

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