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A 33-year-old member asked:

What is the level for low blood sugar & high blood sugar?

2 doctor answers5 doctors weighed in
Dr. James Chu
Endocrinology 26 years experience
Normal sugar levels: For children and non-pregnant adults, normal blood sugar (glucose) level is considered <100 mg/dl in fasting morning state, and <140 mg/dl after a meal. Anything above these levels is considered either pre-diabetes (fasting 100-125, post-meal 140-199) or diabetes mellitus (fasting >=126, post-meal >=200 mg/dl). Low blood sugar varies depending on person, but typically is considered <60-70 mg/dl.
Created for people with ongoing healthcare needs but benefits everyone.
Dr. Vered Lewy-Weiss
A Verified Doctoranswered
29 years experience
It Depends: A normal fasting blood sugar is ranges between 65-99 mg/dl. 2-hours following a meal a normal blood sugar is less than 140 mg/dl. These are based on lab glucose values. A home glucometer may be off some.
Created for people with ongoing healthcare needs but benefits everyone.

Similar questions

A 37-year-old member asked:

What is the difference between high blood sugar and low blood sugar?

1 doctor answer1 doctor weighed in
Dr. Vered Lewy-Weiss
A Verified Doctoranswered
29 years experience
Hi & Low Blood Sugar: A low blood sugar is normally less than 65 mg/dl, though some may have symptoms before that point. Elevated blood sugars are >99 fasting or >139 around 2 hr after eating. Diabetes range is >125 fasting or >199 at 2 hr after eating. Some would say that > 199 before 2 hr is in the diabetes range.
Created for people with ongoing healthcare needs but benefits everyone.
A 38-year-old member asked:

How to know if I have low or high blood sugar?

2 doctor answers6 doctors weighed in
Dr. Jason Stokes
Family Medicine 23 years experience
Low blood sugar: The average for blood sugar (glucose) is 80 on the low end to 120 on the high end. The only way to know your number is to check it in a clinic or with a handheld glucometer. The one problem with a random blood sugar is that your blood sugar will fluctuate throughout the day, lower before meals, higher after meals, etc. One test that can help avoid this is called HcA1C which gives an "average".
Created for people with ongoing healthcare needs but benefits everyone.
A 48-year-old member asked:

What are some symptoms of high blood sugar level?

1 doctor answer3 doctors weighed in
Dr. Vered Lewy-Weiss
A Verified Doctoranswered
29 years experience
Symptoms of hi sugar: Symptoms of high blood sugar classically include frequent and much urination and constant thirst. Fatigue and weight loss may also be seen if blood sugars have been high enough for long enough to be considered diabetes. For mild-moderate elevations in blood sugar, no symptoms may be noted as well.
Created for people with ongoing healthcare needs but benefits everyone.
A 37-year-old member asked:

Can you please tell me how low blood sugar & high blood sugar differ?

1 doctor answer1 doctor weighed in
Dr. Ronald Krauser
A Verified Doctoranswered
Rheumatology 53 years experience
Clarify the question: Your question does not make sense. The results of the test. One value is below normal and the other is above normal.
Created for people with ongoing healthcare needs but benefits everyone.
Saudi Arabia
A 20-year-old female asked:

How can I differentiate between high blood sugar and low blood sugar? Is there a special odor?

3 doctor answers8 doctors weighed in
Dr. Thomas Knecht
A Verified Doctoranswered
32 years experience
Test, not smell: Hi. It's extremely easy to differentiate with a blood glucose meter. Test, and look at the result. Since you're 20, and asking about low blood sugar, I'll assume you're type 1 diabetic on insulin, although I hate to guess. Diabetes service dogs can detect hypoglycemia by smell, but we can't. Use your blood glucose meter and keep your diabetes well controlled. Good luck!
Created for people with ongoing healthcare needs but benefits everyone.

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Last updated Jul 31, 2018
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