Lab report
Fasting blood sugar: normal range and what your result means
Also called fasting sugar, fbs, fbg, fasting glucose, khali pet sugar
What this test measures
Fasting blood sugar is your sugar level after at least 8 hours without food. It shows how well your body controls sugar when you have not eaten.
Fasting blood sugar ranges for adults
| Result (mg/dL) | What it means |
|---|---|
| under 54 | Dangerously lowThis is a dangerously low sugar. If you feel shaky, sweaty, confused or drowsy, take 3 teaspoons of sugar or glucose in water now and get medical help. |
| 54 to 69 | LowYour sugar is lower than normal. Eat something with sugar now, and talk to a doctor if it happens again, especially if you take diabetes medicines. |
| 70 to 99 | NormalYour fasting sugar is in the healthy range. |
| 100 to 125 | Prediabetes rangeYour fasting sugar is higher than ideal. Diet, activity and weight loss at this stage can often stop diabetes from starting. |
| 126 to 249 | Diabetes rangeA fasting sugar of 126 or more, confirmed on a second test, is in the diabetes range. Please see a doctor to confirm and plan treatment. |
| 250 to 399 | Very highYour sugar is very high. Please see a doctor today or tomorrow. |
| 400 and above | Dangerously highThis is a dangerously high sugar. If you feel very drowsy, are vomiting or breathing fast, go to a hospital now. |
Taken after at least 8 hours without food. Shown in mg/dL.
Labs use slightly different ranges. Always compare with the range printed on your own report.
What helps
- Eat dinner earlier and keep it light, with fewer refined carbs.
- Walk for 10 to 15 minutes after meals.
- Sleep 7 to 8 hours; poor sleep raises morning sugar.
- Take diabetes medicines as prescribed.
Talk to a doctor if
- Your fasting sugar is 126 or above, or 100 to 125 on more than one test
- You have diabetes and your morning readings stay above your target
- You get low sugar episodes (below 70)
The right doctor for this
Endocrinologist (Hormone Specialist)
Show your report to a doctor online and get a clear plan. If you are not sure who to see, a general physician is always a safe place to start.