Normal blood sugar levels: fasting, after meals and random
Medically reviewed by Dr. N. S. Santosh Varma, MBBS, FIM, FIDM, FICCM · Reg. APMC/FMR 112686 · Reviewed October 2026
For adults without diabetes, a fasting blood sugar of 70 to 99 mg/dL is generally normal, 100 to 125 mg/dL suggests prediabetes, and 126 mg/dL or above on two occasions suggests diabetes. Two hours after eating, below 140 mg/dL is normal. A random sugar of 200 mg/dL or more with symptoms also suggests diabetes. A doctor confirms the diagnosis.
Blood sugar chart (adults, mg/dL)
| Test | Normal | Prediabetes | Diabetes |
|---|---|---|---|
| Fasting (8+ hours) | 70 – 99 | 100 – 125 | 126 or above* |
| 2 hours after glucose / meal | Below 140 | 140 – 199 | 200 or above* |
| HbA1c | Below 5.7% | 5.7 – 6.4% | 6.5% or above* |
| Random | — | — | 200 or above with symptoms |
*Usually confirmed with a repeat test. Targets for people already living with diabetes are set by their doctor.
Symptoms of high blood sugar
- Excessive thirst and frequent urination
- Unexplained weight loss
- Tiredness and blurred vision
- Slow-healing wounds or frequent infections
Low blood sugar warning
A sugar below 70 mg/dL with sweating, shakiness or confusion needs quick sugar intake and medical advice, especially for people on diabetes medicines.
Check your sugar at home with YIRA
YIRA's 70-test checkup includes a random blood sugar test and a doctor consultation. Read about HbA1c for the three-month average.
A YIRA Family Health Plan includes a 70-test full body checkup at home for one registered member, a doctor consultation for the family, a review of an elder's past reports, and dental and eye check-ups. Essential ₹999 a year (up to 4 family members registered); Complete ₹1,299 a year (up to 8, with ₹5 lakh accident cover for the buyer).
70-test checkup at home plus family care, from ₹999 a year
Essential ₹999 (one 70-test checkup, up to 4 family members registered) · Complete ₹1,299 (up to 8, with ₹5 lakh accident cover). Doctor consultation, dental and eye check-ups included. Pay after sample collection.
Frequently asked questions
What is a normal fasting blood sugar?
Generally 70 to 99 mg/dL for adults without diabetes.
What is a normal sugar level after eating?
Below 140 mg/dL two hours after a meal is generally considered normal.
Is 110 fasting sugar high?
A fasting value between 100 and 125 mg/dL is commonly classed as prediabetes. Talk to your doctor about a repeat test or HbA1c.
Related
Medically reviewed by Dr. N. S. Santosh Varma (MBBS, FIM, FIDM, FICCM; APMC/FMR 112686). Prepared by the YIRA health team · Last updated 1 October 2026. This page is general health information, not medical advice or a diagnosis. Reference ranges differ between labs; always discuss your results with a doctor. In an emergency, call 108 or go to the nearest hospital.