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Doctor insights on: Why Fast Before A Bun Test

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What occurs if i didn't fast before taking a blood test for diabetes?

What occurs if i didn't fast before taking a blood test for diabetes?

High blood glucose: Fasting blood glucose levels are used to make diagnosis of diabetes. If you do not fast, your glucose levels will be higher and you may get labelled as diabetic when you may not have the disease. ...Read more

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Can you fast too long before a fasting blood test?

Can you fast too long before a fasting blood test?

In a way, yes: If you fast for longer than a day or so, it will alter some blood chemistries. Fasting tests are usually set for an overnight fast, or a 12 hour fast. Prolonged fasting is starvation and it affects the body metabolism. ...Read more

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What to do if i had a random glucose test ->77 mg/dl, after working out . My glucose rises to 165 after eating pasta.?

What to do if i had a random glucose test ->77 mg/dl, after working out . My glucose rises to 165 after eating pasta.?

Could be normal: Hi. If you're worried about diabetes risk, get tested. It's easy: fasting serum glucose, random serum glucose, A1c, or oral glucose tolerance test; each has its own diagnostic criteria. In the meantime, of course eat healthily and exercise regularly for life. Good luck! ...Read more

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How many hours should i be fasting before sugar blood test of pregnancy?

How many hours should i be fasting before sugar blood test of pregnancy?

Ask your OB MD: It may depend upon whether you are having a FBS(fasting blood sugar) & 2 hour post prandial(after eating) or full several hour Glucose Tolerance test(GTT) give your OB MD a call and find out. ...Read more

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Normal blood sugar but have +1 in sugar un urine. I was fasting for more than 12 hrs when i got blood test then ate a lot before urine test. What is ?

Normal blood sugar but have +1 in sugar un urine. I was fasting for more than 12 hrs when i got blood test then ate a lot before urine test. What is ?

Some ideas: You may have mild glucose intolerance and spiked to a high level when you are. You may have Kidneys that lose glucose from Wilson's or any of dozens of other illnesses. It may an interfering substance or lab error. ...Read more

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Is it okay to drink before 12hr fasting?My test includes blood sugar, lipid profiles and serum creatinine.Coz last test i feel so thirsty.

Is it okay to drink before 12hr fasting?My test includes blood sugar, lipid profiles and serum creatinine.Coz last test i feel so thirsty.

Water: Drinking a little water should not have a significant impact on result of blood sugar or lipid panel. It may affect serum creatinine, but that should not be very significant either. It is recommended that you be fasting for the tests though. ...Read more

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I've got a glucose blood test tomorrow morning and have to fast 10 hours before and was wondering whether you can drink water?

Yes: Water is fine; nobody wants you to be dehydrated just for some blood tests, but they don't want you to take any food or other fluids which may elevate your blood sugar. ...Read more

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How many hours to fast before a fasting blood sugar level test?

How many hours to fast before a fasting blood sugar level test?

Fasting: Depends on what's being measured but nothing after midnight for 8 am lab draw is adequate. Make sure you drink plenty of water. ...Read more

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How do you explain normal glucose after a meal but high glucose after fasting and before eating in the morning?

Good question: High morning glucose may be a "dawn phenomenon" or "somogyi effect." they are both rebound hyperglycemia in response to low glucose levels at night. The first is from natural insulin, the second man-made. Depending on the morning level, your doc may ask you to check you glucose at 2-3 am for a few nights. Treatment depends on the cause. Good luck and check with your physician for help. ...Read more

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Hi does Powerade cause high sugar before a blood test because my blood test results came back at my sugar level was 115 h should i worry?

Hi does Powerade cause high sugar before a blood test because my blood test results came back at my sugar level was 115 h should i worry?

High glucose: means you need to manage your glucose level better. I don't know what is in Powereade but many of those drinks are loaded w/sugar. Consider switching to lemon water. Please see your doc. He/she may give you a A1c test which measures your glucose over 3-4 months rather than one moment in time. Peace and good health. ...Read more

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My lipase was too high after having a pancreas blood test. What does that mean?

My lipase was too high after having a pancreas blood test. What does that mean?

Lipase: It may mean inflamation of the pancreas, inflamation of pancreas may come from alcohol abuse, infection, tumor or too much fat( hypertriglyceridemia) in the blood stream. ...Read more

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How does eating before a breath test throw it off. Like if it's with glucose looking for gases. Why would eating before test might make it positive?

How does eating before a breath test throw it off. Like if it's with glucose looking for gases. Why would eating before test might make it positive?

Carbs in food: The hydrogen breath test provides information about the digestion of certain sugars (carbohydrates) and is performed to help diagnose lactose intolerance and bacterial overgrowth. If you eat before the test, the sugars in your food will interfere with the measurement of the amount of hydrogen produced by bacterial fermentation in your bowel and then eliminated by respiration through your lungs. ...Read more

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Glucose tolerance test negative but every morning I wake up with fasting sugar 104-108 . If I eat sugar during day sugar not high. So what do I do?

Glucose tolerance test negative but every morning I wake up with fasting sugar 104-108 .  If I eat sugar during day sugar not high. So what do I do?

More testing needed: You are prob a pre-diabetic or have a metabolic syndrome. You need further testing to confirm. Ask your doctor for a Hemoglobin A1C test. It gives you the ave blood glucose over the last 3 months. Normal is <5.7, borderline is 5.7-6.4, and 6.5 or higher is diabetes. Start checking your fingersticks intermittently. Some fasting and some 2 hrs after a meal. AM goal is <100, after meal is <180 ...Read more

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