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Doctor insights on: How Long Do You Fast For Fasting Blood Work

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When u fast for a routine physical blood work is the gluccose reading only show how you ate the day prior to fasting?

When u fast for a routine physical blood work is the gluccose reading only show how you ate the day prior to fasting?

No: The fasting glucose is just that - your baseline fasting glucose. It has nothing to do with what you ate the day before. The point of it is to see your overall health and diet for several months. It's used to diagnose diabetes for example. Two fasting blood glucoses on separate days that are 126 mg/dl would meet one of several definitions of diabetes mellitus. ...Read more

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How long do I need to fast for getting blood work done?

How long do I need to fast for getting blood work done?

8 hours is common.: Most clinics will ask you to have nothing to eat after midnight, and have the blood draw first thing in the morning- so it could be 8-12 hours. You may drink non-calorie clear liquids, i.e., water, tea, coffee. Don't put milk or sugar in your beverage, or you'll have to repeat the test! ...Read more

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How many hours for fasting to do blood work?

How many hours for fasting to do blood work?

Ideal is 12 hours: If cholesterol, HDL, LDL & triglycerides are included in the blood work it should be 12 hours.
If this is not included 8 hours is sufficient. ...Read more

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If I was fasting what blood work would be high or low?

If I was fasting what blood work would be high or low?

Main values are: Fasting blood work is most often requested for checking a fasting blood glucose and your lipid panel. These test help diagnose diabetes (FBS) and assess your risk factor for cardiovascular disease (chol panel). ...Read more

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Bun creatinine high in fasting blood work. What are the causes?

BUN and creatinine: If you have high BUN and creatinine levels, you may be dehydrated or you may have chronic kidney disease. Ask the physician who ordered the blood test for an opinion as to the cause of the high levels in the blood. The physician knows the patient best and can give a more meaningful answer to your question. Good luck. ...Read more

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What are possible reasons for elevated insulin in my teen year old daughter from fasting blood work?

What are possible reasons for elevated insulin in my teen year old daughter from fasting blood work?

Hyperinsulinemia: Is most commonly seen in children & teens with obesity, a bmi of > 95th %ile. It can be a precursor to diabetes mellitus type ii, especially with a family history of dm ii, & part of metabolic syndrome, with high cholesterol/ triglycerides & high blood pressure. It usually means that Insulin resistance is developing, causing the pancreas to produce more insulin. Follow-up & diet change are needed. ...Read more

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I have to have routine fasting blood work done. I am very nervous. Is it ok to take a Xanax (alprazolam) before I gon?

I have to have routine fasting blood work done. I am very nervous. Is it ok to take a Xanax (alprazolam) before I gon?

Relaxation: Deep breathing and relaxation will be best exposure technique who is driving you for blood work benzo is last resort don't drive. ...Read more

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My son has to have extensive fasting blood work (around 10 or 12 vials) Is it dangerous to take so much blood at once? He's very frail.

My son has to have extensive fasting blood work (around 10 or 12 vials) Is it dangerous to take so much blood at once? He's very frail.

Talk to your doctor: It is that he has to have 10-12 tests or has to have 10-12 tubes of blood drawn? What type of tests are being done? Most routine blood tests can be done on small amounts of blood. It would be prudent to talk to your doctor. ...Read more

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Is it really big deal if I have cream in coffee 7 hrs before fasting blood work? I find it hard to believe that could badly mess with results.

Is it really big deal if I have cream in coffee 7 hrs before fasting blood work? I find it hard to believe that could badly mess with results.

Fasting Blood Work: Well it may or may not "mess with the results" as you say. It depends on what is being tested for. Are you waiting until afternoon to get the blood work done because that is when your appointment is? Why not go to the office as soon as they open to get your blood work? Then you can have your coffee and cream. If your fasting sugar is 125 you don't have diabetes, if 126 you do. Any difference? ...Read more

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Is it okay to drink water when fasting for blood work?

Is it okay to drink water when fasting for blood work?

Yes: Drinking water is fine unless directed specifically by your physician to avoid it. Fasting lab is looking for blood sugar and cholesterol which would be affected by coffee, food, and milk. I usually recommend to my patients to take their routine meds even when fasting except for medications that would affect the blood sugar. ...Read more

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Blood work for insurance wellness program, fasting glucose was 100, 100-125 moderate range. Is this something I should worry about? Last year was 81.

Blood work for insurance wellness program, fasting glucose was 100, 100-125 moderate range. Is this something I should worry about? Last year was 81.

Exercise: While your fasting glucose is still in the normal range, but it has crept up and you would do well to start exercising and lose 5-10% of your weight.
For good health - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Drink enough water daily, so that your urine is mostly colorless. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form.
Practice safe sex, if you have sex. ...Read more

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I have to have fasting blood work... Is it ok to have my morning glass of lemon water before?

I have to have fasting blood work... Is it ok to have my morning glass of lemon water before?

Fast 8 hours: It's best to maintain an 8 hours of nothing by mouth prior to any fasting lab studies. If you can schedule your lab draws first thing in the morning, it's typically easier to maintain this standard. ...Read more

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Cardiologist did blood work and said it was all fine. He said my fasting glucose was 6.4 isn't the prediabetic?! :/

Hemoglobin A1C: If your doctor was reporting the results of your diabetic test, the hemoglobin a1c, it is in the prediabetic range. An ideal hemoglobin a1c is 5.5 or less. At 5.5, risk of heart attack and stroke starts to rise. ...Read more

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Had a fasting blood work done 3 days ago. My glucose level was 274, triglycerides was 356 and A1c was 9.1. Please advise.

Uncontrolled Type 2: This is a chicken and the egg thing. You have diabetes out of control and need to start metformin and Bydureon (exenatide) for a >2 point a1c reduction. The high triglycerides are poisoning your pancreas and liver such that they are having a hard time "turning the corner." you may need to treat the triglycerices and the sugars to get out of your current toxicity; and stick with a diabetic lifestyle program! ...Read more