Fasting Blood Sugar and PPBS Test to Know your Blood Sugar Levels

fasting blood sugar Normally, your body makes a hormone called insulin to help control your blood sugar.A blood sugar level test is a type of blood test used to determine the amount of glucose in the blood. It is mainly used in screening for prediabetes or diabetes. Prediabetes is the precursor stage before diabetes mellitus in which not all of the symptoms required to diagnose diabetes are present, but blood sugar is abnormally high. In people with diabetes, blood glucose monitoring is used with frequent intervals in the management of the condition. Some of the common blood glucose tests include.

  • FBS – fasting blood sugar.
  • PPBS – postprandial blood sugar.

Fasting Blood Sugar (FBS)

A fasting sugar test is a test that determines the amount of sugar, called glucose, in the blood after fasting for certain hours. It is the most commonly used test to diagnose diabetes.

Test procedure : The test procedure involves collecting a small amount of blood either from a finger or from a vein.

Test Instructions: Don’t eat or drink anything but water for eight hours before the test is scheduled. Most of the time, this means having the test done in the morning, before breakfast.

Levels of FBS : Fasting blood sugar more then 126 mg/dL is considered as diabetes.

Postprandial Blood Sugar (PPBS)

A postprandial sugar test is a test that determines of sugar, called glucose, in the blood after a meal.

Test procedure : The test procedure involves collecting a small amount of blood either from a finger or from a vein.

Test Instructions: Eat a meal that contains carbohydrates. Do not smoke, eat, drink, or exercise during the 2 hours. These activities cause the blood sugar level to be falsely low or falsely high. The blood will be drawn for the postprandial blood sugar(glucose) after given time.

Levels of PPBS: Post-prandial blood sugar (2 hours after taking food)more then 200 mg/dL is considered as diabetes.

In a healthy person, range of determining diabetes is:
FBS: 70-110 mg/dL
PPBS: 70-140 mg/dL

In pregnant women, the blood sugar range for diabetes is :
Prediabetic FBS : 100-125 mg/dL
Prediabetic PPBS : 140-199 mg/dL

Abnormal blood values for a 2-hour 75-gram oral glucose tolerance test are:
Fasting: greater than 92 mg/dL
1 hour: greater than 180 mg/dL
2 hour: greater than 153 mg/dL

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