Tests For Blood Glucose

Overview:

This test is performed to measure the amount of glucose present in the blood. A steady level of glucose should be maintained in the blood as it is the basic source of energy for the body.

When it’s done:

• To diagnose diabetes
• To screen for both high blood glucose and low blood glucose levels
• To monitor blood glucose levels in patients with diabetes
• To identify people who are likely to develop diabetes (pre-diabetes)
• To monitor treatment of diabetes

The test is used to detect diabetes (high glucose levels) if someone is showing the following symptoms:

• Increased thirst with frequent urination
• Delayed wound healing
• Blurred vision
• Tiredness

This test is also used to detect abnormally low blood sugar levels when the patients have symptoms such as:

• Sweating
• Trembling
• Hunger
• Confusion

When to Avoid:

There is no specific condition when the test should be avoided.

How to prepare:

It is recommended not to eat or drink anything except water for at least 8 hours before the test. This is the fasting blood sugar test and is usually the first test done to check for pre-diabetes and diabetes. In patients with diabetes, glucose levels are checked while fasting and after meals. Your doctor may also ask for a glycosylated haemoglobin test to check the control of your diabetes over the past 2 to 3 months.