Doctor insights on:
Why Fast Before A Bun 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
Eight to Twelve: Eight to twelve hours should suffice.Get a more detailed answer ›
Did glucose tolerance test today i know blood should be drawn 1hr after drinking she wait about 1hr 15 min before taking my blood is that okay?
Check w/your doctor: They may want you to repeat the test, but it depends upon the results. ...Read more
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 ?
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.
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
Getting a liver enzyme blood test. How many days before that should I stop lifting weights and jogging, so as not to skew blood test results?
Not necessary.: Those activities should not skew your results. ...Read more
I just drank a bottle of powerade before doing my First Response Pregnancy Test. It came out negative but will dilute urine make it inaccurate?
No: The test should be accurate. Test again in another week if you're still concerned. ...Read more
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
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
I had a 24 hr urine test i drank extra and now have to repeat too dilut my blood creatanine was 1.06 would that have diluted blood for a false creat?
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
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 moreSee 1 more doctor answer
What to do if I have high blood sugars after 12 hours fasting then normal after I eat what does that mean?
Dysglycemia: Has an A1c level been checked yet? ...Read more
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