Our blood sugar levels give an overview about the health and how an individual body is handling diabetes.

Blood sugar level means the amount of sugar that gets absorbed into the blood stream after consuming food. It spikes an hour after eating and eventually drops.

High blood glucose level is an indication of uncontrolled diabetes mellitus or insulin resistance. Knowing when to test and what to expect with sugar levels can help diabetic patients to manage the condition well and stay healthy. Also Read: Importance Of Self-Monitoring Blood Sugar

The body requires fuel for energy and derives it from the food we consume whereas insulin assists the body to store and releases glucose as required. The factors that trigger the rise of blood sugar level include:

Large meals

Consuming foods and drinks high on sugar

Processed foods and simple carbs

The quantity of food taken in the last meal

The body’s ability to secrete and respond to insulin

Blood sugar levels testing

Blood Glucose Testing

There are two ways to determine fasting blood glucose levels such as conventional blood glucose test and glycosylated hemoglobin test.

Fasting Blood Sugar Test (FBS)

Fasting blood sugar test measures the value of blood glucose at specific time. To get the accurate value it is recommended to take a blood test in the morning on an empty stomach. To get accurate results do not eat or drink food except water for 8-10 hours before the test. Fasting blood sugar value of 120mg/dl or more is termed as diabetes mellitus.

Post-Prandial Blood Sugar (PPBS)

Post-prandial blood sugar test is measured after two hours of eating any meal and blood sugar values more than 200mg/dl indicates diabetes mellitus.

Random Blood Sugar Test (RBS)

Random blood sugar sample is done at any time in a day, it may be a useful test if you suspect diabetes. A blood sugar level of more than 160- 200 mg/dl indicates diabetes mellitus.

HbA1C (Glycosylated Hemoglobin Test)

The HbA1C is a test that gives you the measure of average blood glucose levels over a period of last 3 months. You need not fast before the test as the test measure glucose attached to the part of red blood cells. This test is more accurate and gives a good indication of your average blood glucose level over the last 2-3 months. The normal range of HbA1C is 4 %-5.6%, values between 5.7%-6.4% indicate you are at risk of developing diabetes and above 6.5% denotes that you have diabetes.

Target Blood Glucose Levels

Blood glucose levels targets are personalized which are based on the following criteria:

Duration of diabetes mellitus


Comorbid conditions

Being unaware of both hyperglycemia and hypoglycemia

The target range as per the American Diabetes Association (ADA) are based on age and health conditions, strict glycemic goals are set appropriate for each individual.

HbA1c Less than 7 %

Before meal blood glucose 80-130 mg/dl

Post Prandial blood glucose less than 180mg/dl

How To Manage Diabetes Mellitus

Maintain a log book and note down the values after each blood test and factors which affects food, physical activity and stress. Monitor your blood glucose record if the values are too high or too low for several days at the same time, it is time to change your diabetes treatment plan. Talk to your diabetologist to understand about your results and modifications required in your treatment. Also Checkout: Diabetic Diet Chart (1600 Calories, Vegetarian)


Always keep in mind blood glucose levels monitoring is the easiest and simplest way to know how well treatment is working and whether you really need to change your diabetes treatment plan.