One of the most common blood test panels recommended to everyone these days is blood sugar testing. Diabetes and pre-diabetes have emerged as major concerns affecting over 77 million (type 2) and 25 million adults in India respectively.
Within these, there are two kinds of tests that are recommended – the fasting blood test and the PPBS blood test (Postprandial Blood Sugar Test). In this article, we look at what these tests are, when you should use each, and what the results mean for your overall health.
What is a Fasting Blood Sugar Test?
The fasting blood sugar test measures your blood sugar levels after an 8 to 12 hours overnight fast. This is the most common test used to diagnose and monitor diabetes. It helps to check if your body is able to maintain normal blood sugar levels with a gap in meals.
Fasting Blood Test Range
| Range | Value (mg/dL) |
|---|---|
| Normal | 70 and 99 |
| Pre-diabetes | 100 to 125 |
| Diabetes | >126 |
Note: The above fasting and PPBS testing values are for a typical adult. The range will differ for pregnant women, children, and those with any underlying medical conditions.
Postprandial Blood Sugar Test / PPBS Blood Test
PPBS testing is used to measure your blood sugar levels two hours after eating. This test checks how well your body is able to regulate the glucose released from a meal as well as monitors insulin efficacy.
PPBS Blood Test Range
| Range | Value (mg/dL) |
|---|---|
| Normal | <140 |
| Pre-diabetes | 140 to 200 |
| Diabetes | >200 |
Fasting and PPBS Blood Test: Key Points to Note
Procedure
The sample for fasting and PPBS testing is collected via a blood sample taken from a vein in your arm. This is like a regular blood test and does not have any additional procedures.
Considerations
To ensure you get the most accurate values, it is advisable to follow these guidelines for your test. Also, be sure to opt for a reputed diagnostic centre such as Clinico, known for their advanced technology and timely testing. For fasting blood sugar test you need to fast for at least 8 hrs before the test. Overnight fasting is preferred with glucose fasting sample taken early next morning before having any food. Water intake is allowed before the test. It is advisable not to exceed 12 hours of fasting period as values may be falsely low. PPBS blood test is done exactly 2 hours after a meal intake. It is recommended that the meal have at least 75 grams of carbohydrates. After the meal don’t eat anything before the test, though water is allowed.
Which Test is Right for You?
Both tests help you learn about your body’s ability to regulate glucose. While a fasting blood test is the first step towards screening for diabetes, the PPBS test can help you learn your body’s ability to handle sugar. Based on your history, your medical doctor will advise you on which test is best for you or may suggest both for a comprehensive screening.
Conclusion
While both these tests look at sugar levels in the body, they assess different metabolic activities. Routine testing of these levels will help you keep glucose levels in check and help you take timely steps to guard against diabetes.
