Blood Sugar Levels Chart: Normal Range, Symptoms for Healthy & Diabetic

Introduction

Maintaining healthy blood sugar levels is essential for overall well-being. Blood glucose acts as the main source of energy for our body, and when it stays within a normal range, your organs function smoothly. However, fluctuations in blood sugar — either too high or too low — can create serious health risks. Monitoring sugar levels regularly helps in detecting problems early and preventing long-term complications like diabetes, nerve damage, kidney issues, and heart disease.

In this article you will understand what normal sugar levels look like, how they change by age, symptoms of abnormal sugar levels, tests required, prevention methods, and why choosing a reputed diagnostic centre like City X-Ray is beneficial for timely diagnosis and care.

What is a Normal Blood Sugar Level?

A normal blood sugar level indicates how effectively your body manages glucose. Values depend on whether the test is done fasting, after meals, or randomly. Healthy individuals generally maintain stable glucose levels throughout the day, but food, stress, sleep, physical activity, and hormones can influence these numbers.

Normal Blood Sugar Level Range Chart

Below is a clear chart showing normal sugar levels in healthy adults:

1. Normal Sugar Level Chart 

What is Normal Blood Sugar by Age?

Blood sugar levels can slightly vary based on age because metabolism, hormonal activity, and organ function change over time. Here is a detailed age-wise chart:

2. Normal Blood Sugar Level Chart by Age

A. Children (0–12 years)

B. Teenagers (13–19 years)

C. Adults (20–59 years)

D. Older Adults (60+ years)

Metabolism slows with age; slightly higher values may still be considered normal.

These values serve as general reference ranges. Always follow doctor recommendations based on your health condition.

Symptoms of High or Low Blood Sugar

Changes in blood sugar usually show clear signs. Understanding these symptoms helps in early detection and timely treatment.

Symptoms of High Blood Sugar 

• Frequent urination
• Increased thirst
• Unexplained weight loss
• Extreme tiredness
• Blurred vision
• Slow healing wounds
• Increased hunger
• Dry mouth
• Headaches

Symptoms of Low Blood Sugar 

• Shaking or trembling
• Sweating
• Sudden hunger
• Dizziness
• Irritability or mood changes
• Confusion
• Heart palpitations
• Pale skin
• Weakness or fatigue

If these symptoms persist, get your sugar level tested immediately.

Blood Sugar Tests 

If your sugar fluctuates or symptoms appear, doctors recommend several tests to diagnose the condition accurately.

Important Tests for Sugar / Diabetes:

1. Fasting Blood Sugar Test (FBS)
2. Post-Prandial Sugar Test (PPBS)
3. Random Blood Sugar (RBS)
4. HbA1c Test
5. Oral Glucose Tolerance Test (OGTT)
6. Ketone Test
7. Insulin Level Test

How to Maintain Normal Blood Sugar Levels 

Keeping blood sugar in a healthy range helps prevent diabetes and other complications.

1. Follow a Balanced Diet
2. Exercise Regularly
3. Maintain a Healthy Weight
4. Stay Hydrated
5. Reduce Stress
6. Sleep 7–8 Hours Daily
7. Avoid Smoking & Alcohol
8. Regular Health Checkups

Why Choose City X-Ray & Scan Clinic for Sugar Testing?

City X-Ray & Scan Clinic is known for reliable and accurate diagnostic services. Here’s why people trust it for sugar-related tests:

1. Advanced Testing Technology
2. Fast & Accurate Reporting
3. Experienced Pathologists & Raidologist
4. Affordable Pricing
5. Home Sample Collection

Conclusion

Understanding normal blood sugar levels is the first step toward maintaining good health. Knowing the standard ranges — whether fasting, post-meal, or age-specific — helps you identify early signs of imbalance. Regular testing, awareness of symptoms, proper diet, exercise, and lifestyle changes can prevent complications like diabetes.

If you experience symptoms like excessive thirst, frequent urination, fatigue, or blurred vision, it’s important to get tested immediately. A trusted diagnostic centre like City X-Ray ensures accurate, fast, and reliable testing, helping you stay in control of your health.

Healthy sugar levels support a healthy life monitor them regularly, stay aware, and make smart lifestyle choices.

Frequently Asked Questions (FAQ)

1. What is the normal sugar level for adults?

For adults, fasting sugar should be 70–100 mg/dL, and two hours after eating it should stay below 140 mg/dL. Higher readings may indicate prediabetes or diabetes.

2. What should be the normal sugar level after eating?

Sugar rises after meals but should return to below 140 mg/dL within two hours. If it stays high for longer, it may signal poor glucose control.

3. Can prediabetes be reversed?

Yes, prediabetes can often be reversed with weight control, a healthy diet, and regular exercise. Early changes can bring sugar levels back to normal.

4. What sugar level indicates diabetes?

A fasting level of 126 mg/dL or more, or a post-meal level of 200 mg/dL or above, usually indicates diabetes. An HbA1c of 6.5% or higher also confirms it.

5. Does stress increase blood sugar?

Stress can raise sugar levels because stress hormones increase glucose in the blood. Managing stress helps maintain stable sugar levels.

6. What is the best test for long-term sugar monitoring?

The HbA1c test is the best because it shows your average sugar of the past three months and reflects long-term control.

7. Do children have different sugar ranges?

Children have similar ranges, but their sugar can fluctuate quicker. A fasting range of 70–100 mg/dL and post-meal below 140 mg/dL is generally normal.