do you have to fast for diabetes pregnancy test?
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DO NOT eat or drink anything (other than sips of water) for 8 to 14 hours before your test. (You also cannot eat during the test.) You will be asked to drink a liquid that contains glucose (75 g). You will have blood drawn before you drink the liquid, and again 2 more times every 60 minutes after you drink it.
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The most common types of tests that require fasting include: Glucose tests, which measure blood sugar. One type of glucose test is called a glucose tolerance test. For this test you will need to fast for 8 hours before test.
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How to prepare for a blood glucose test. Blood glucose tests are either random or fasting tests. For a fasting blood glucose test, you can't eat or drink anything but water for eight hours before your test.
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Typically, you will be asked to fast for 8 hours before the blood sample is collected. Occasionally, a healthcare practitioner may do testing when fasting is not possible, such as when a glucose tolerance test is done.
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If a fasting glucose (FBS), LDL, or Triglycerides test is ordered for you do not eat anything 8 to 12 hours before coming into the laboratory to have blood samples collected. You may drink water and take any prescription medications, but nothing else by mouth. No coffee or tea.
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For this test you will need to fast for 8 hours before test. When you arrive at the lab or health care facility, you will: Have your blood tested. Drink a special liquid containing glucose.
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A. No. You do not need to fast and you can test your blood any time of the day. It is best to collect the blood sample before eating or several hours after a meal.
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You need to go to the lab one time for a 2-hour glucose tolerance test. For this test: DO NOT eat or drink anything (other than sips of water) for 8 to 14 hours before your test. (You also cannot eat during the test.)
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You will need your blood drawn every hour for 2 to 3 hours for a doctor to diagnose gestational diabetes. High blood glucose levels at any two or more blood test times—fasting, 1 hour, 2 hours, or 3 hours—mean you have gestational diabetes. Your health care team will explain what your OGTT results mean.
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Common fasting blood tests Examples of blood tests that require you to fast include: a fasting blood glucose test (used to test for diabetes) – you fast for 8 to 10 hours before the test.
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You should not eat for eight hours before having your blood glucose measured to check for diabetes or to see how well treatments are working. An alternative test for glucose level that does not require fasting measures a substance called hemoglobin A1c, which reflects average blood sugar over the previous three months.
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Fasting blood sugar (FBS) If you do not have diabetes, do not eat or drink anything other than water for at least 8 hours before the blood sample is taken.
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Blood glucose tests are either random or fasting tests. For a fasting blood glucose test, you can't eat or drink anything but water for eight hours before your test. You may want to schedule a fasting glucose test first thing in the morning so you don't have to fast during the day.
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However, fasting is required before commonly ordered tests for glucose (blood sugar) and triglycerides (part of the cholesterol, or lipid, panel) for accurate results. You should not eat for eight hours before having your blood glucose measured to check for diabetes or to see how well treatments are working.
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DO NOT eat or drink anything (other than sips of water) for 8 to 14 hours before your test. (You also cannot eat during the test.) You will be asked to drink a liquid that contains glucose, 100 grams (g) . You will have blood drawn before you drink the liquid, and again 3 more times every 60 minutes after you drink it.
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Tell your doctor about any prescription or over-the-counter medications or supplements you're taking. You may need to fast (refrain from eating or drinking) for four hours before the test.
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a fasting blood glucose test (used to test for diabetes) – you fast for 8 to 10 hours before the test. an iron blood test (used to diagnose conditions such as iron deficiency anaemia) – you fast for 12 hours before the test.