how long do you have to fast for a fasting glucose test?
4147
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. You may eat and drink before a random glucose test.
1121902
Sometime between weeks 24 and 28, your doctor will test to see if your body is using sugar correctly. You'll drink a very sugary liquid and then, an hour later, you'll have a blood test. You do not need to fast before this 1-hour glucose test, but don't have a doughnut on your way to the doctor's office either.
1189558
For this test, you'll be asked to avoid eating or drinking anything other than sips of water for 8 to 14 hours before your test, the U.S. National Library of Medicine says. Once you arrive at the testing site, you'll have your blood drawn. Then, you'll be asked to drink a liquid that has 75 grams of glucose.
7491
You usually need to fast for 8–12 hours before a test.
100197
Common fasting blood tests 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.
784555
This test requires a 12-hour fast. You should wait to eat and/or take a hypoglycemic agent (insulin or oral medication) until after test has been drawn, unless told otherwise. Eating and digesting foods called carbohydrates forms glucose (blood sugar).
457457
Diabetes is a condition that can lead to there being too much sugar in the blood. A fasting blood glucose test measures levels of sugar in the blood to see if they are healthy. It is important that a person has not had anything to eat or drink other than water for 8 to 10 hours before a fasting blood glucose test.
344855
For the three-hour test: You will be asked to come to the test fasting — not having had anything to eat or drink for the previous eight hours. A fasting blood sugar will be obtained.
379534
Fasting for a lab test typically lasts eight hours. Your doctor should give you any special instructions related to your tests, including fasting requirements. Always follow her or his instructions.
371583
Fasting is required for a period of 8-10 hours prior to the test. (No food or fluids such as tea, coffee or fruit juice.) You may have sips of water if you are thirsty. Due to the nature of the test, testing is generally done in the morning.
651412
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. An alternative test for glucose level that does not require fasting measures a substance called haemoglobin A1c, which reflects average blood sugar over the previous 3 months.
142805
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.
575604
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.
596733
Testing for gestational diabetes You are required to fast for 8 to 12 hours (you may drink water during this period) and then you have a blood test. After the blood test you have a drink that contains glucose.
370049
A blood glucose test measures the amount of a type of sugar, called glucose, in your blood. Results are often ready in 1 to 2 hours.
682347
You will be asked to come to the test fasting — not having had anything to eat or drink for the previous eight hours. A fasting blood sugar will be obtained.
380046
In preparation for the test, a doctor may instruct a person to fast for up to 12 hours before the test. The doctor's office typically receives the results within a day.