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What does fasting blood glucose test reflect?

by Rhyley Bryan

What does fasting blood glucose test reflect?

Your doctor will order a fasting blood sugar (FBS) test. This test measures your blood sugar levels, or a glycosylated hemoglobin, also called a hemoglobin A1C test. The results of this test reflect your blood sugar levels over the previous 90 days.

How long does it take to get results from a fasting glucose test?

Results: These should be available in a few days. If the reading is too high, which happens an estimated 15 to 23 percent of the time, you’ll be asked to return for a three-hour glucose tolerance test (see below) to see whether you have gestational diabetes.

How do I read my glucose test results?

Results

  1. A normal blood glucose level is lower than 140 mg/dL (7.8 mmol/L).
  2. A blood glucose level between 140 and 199 mg/dL (7.8 and 11 mmol/L) is considered impaired glucose tolerance, or prediabetes.
  3. A blood glucose level of 200 mg/dL (11.1 mmol/L) or higher may indicate diabetes.

Which blood tests require fasting?

Blood tests that you will likely need to fast for include: blood glucose test. liver function test. cholesterol test. triglyceride level test. high-density lipoprotein (HDL) level test. low-density lipoprotein (LDL) level test. basic metabolic panel.

What does the fasting blood sugar test really tell you?

Fasting blood sugar test is a test used to determine the amount of sugar present in a blood sample after a person has fasted overnight . Fasting really means refraining from eating or drinking any food or liquids other than water for at least 8 hours. The fasting blood glucose (sugar) test is used to detect diabetes.

How does fasting affect a blood sugar test?

If you had a fasting blood glucose test: A level of 100 to 125 mg/dL (5.6 to 6.9 mmol/L) means you have impaired fasting glucose , a type of prediabetes. This increases your risk of developing type 2 diabetes . A level of 126 mg/dL (7 mmol/L) and higher usually means you have diabetes.

What to know about fasting before a blood test?

It is important that you do not eat or drink anything but water.

  • or exercise before your test because all these activities can stimulate your digestive system and affect test results.
  • Avoid alcohol for at least 24 hours before your test.
  • You can take prescription medications unless your doctor advices against it.