when do i take the glucose test during pregnancy?
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Most pregnant women have a glucose screening test between 24 and 28 weeks of pregnancy. The test may be done earlier if you have a high glucose level in your urine during your routine prenatal visits, or if you have a high risk for diabetes. Women who have a low risk for diabetes may not have the screening test.
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If you want to know how your meals affect your blood sugar, testing about 2 hours after eating can be helpful. Test whenever you feel your blood sugar is either too high or too low. Testing will give you important information about what you need to do to raise or lower your blood sugar.
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The best time to check blood sugar levels in the morning is right when you wake up and before you eat anything. This gives you a glimpse of what may be happening overnight, and it gives you a baseline for the day. Under 70 mg/dl if you do not have diabetes. 70 to 130 mg/dl if you have diabetes.
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The measurement is taken 1 hour after you consume a glucose drink. This test can be conducted at any time of day as it is not a fasting test. If your blood sugar is normal after the challenge, you will not require any more testing. If it is high, you will have a second test.
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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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The OGTT is done when you're between 24 and 28 weeks pregnant. If you've had gestational diabetes before, you'll be offered an OGTT earlier in your pregnancy, soon after your booking appointment, then another OGTT at 24 to 28 weeks if the first test is normal.
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Screening for gestational diabetes The screening test is called an oral glucose tolerance test (OGTT), which takes about 2 hours. It involves having a blood test in the morning, when you have not had any food or drink for 8 to 10 hours (though you can usually drink water, but check with the hospital if you're unsure).
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Target blood glucose (sugar) levels for the majority of pregnant women: Fasting <5.3 mmol/L. 1 hour after a meal <7.8 mmol/L. 2 hours after a meal <6.7 mmol/L.
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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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Testing for gestational diabetes usually occurs between 24 and 28 weeks of pregnancy. If you have an increased chance of developing gestational diabetes, your doctor may test for diabetes during the first visit after you become pregnant.
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Blood glucose test You should fast for up to 8 hours before having your blood glucose measured to check for diabetes or to see how well treatments are working.
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If your blood glucose from the first step is too high, you will need to come back for a 3-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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Screening for gestational diabetes It involves having a blood test in the morning, when you have not had any food or drink for 8 to 10 hours (though you can usually drink water, but check with the hospital if you're unsure). You're then given a glucose drink.
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Monitor your blood sugar While you're pregnant, your health care team may ask you to check your blood sugar four or more times a day — first thing in the morning and after meals — to make sure your level stays within a healthy range.
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Many people find it helpful to check their blood sugar when they first wake up in the morning and again before their evening meal or going to bed. Others test before or after each meal. Many people test before and after exercising.
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Gestational diabetes is diagnosed with blood tests. Most pregnant women are tested between the 24th and 28th weeks of pregnancy, but if you have risk factors, your doctor may decide to test earlier in the pregnancy. Blood testing confirms the diagnosis.
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Oral Glucose Tolerance Test (OGTT) The OGTT measures blood glucose after you fast for at least 8 hours. First, a health care professional will draw your blood. Then you will drink the liquid containing glucose. You will need your blood drawn every hour for 2 to 3 hours for a doctor to diagnose gestational diabetes.