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Doctor insights on: Plasma Glucose Vs Whole Blood Glucose

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What could cause plasma glucose to be 10 - 15% higher than whole blood glucose concentration?

What could cause plasma glucose to be 10 - 15% higher than whole blood glucose concentration?

Proportions : Plasma has more liquid in it than whole blood. Glucose is dissolved mostly in the plasma component of blood. Whole blood has less of the liquid in it and therefore will have a lower glucose concentration than plasma. ...Read more

Blood Sugar (Definition)

The blood sugar concentration or blood glucose level is the amount of glucose (sugar) present in the blood of a human or animal. The body naturally tightly regulates blood glucose levels as a part of metabolic homeostasis. Glucose is the primary source of energy for the body's cells, and blood lipids (in the form of fats and oils) are primarily ...Read more


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What does it mean if your plasma glucose levels are only high on a fasting blood test?

What does it mean if your plasma glucose levels are only high on a fasting blood test?

Unclear question: Did you have a glucose tolerance test and only the fasting glucose was high? How high was it? Fasting plasma glucose is 100-125 it is pre-diabetes and 126 or higher, if noted on two occasions is diagnostic of diabetes. ...Read more

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Random blood sugar test result 375mg/dL repeat test done Fasting Plasma Glucose result 228mg/dL. Am I diabetic?

Random blood sugar test result 375mg/dL repeat test done Fasting Plasma Glucose result 228mg/dL. Am I diabetic?

Yes!: You are def a diabetic. Get a glucose meter and check some fingersticks. Completely NL in the AM fasting is 70-100. 101-125 is borderline, >125 is diabetes. Go see a diabetes doc and get an A1C test. Normal is up to 5.7. Pre-diabetic is 5.7 - 6.4. Diabetes is >6.4. Check out this link from the NIH: http://diabetes.niddk.nih.gov/dm/pubs/A1CTest/A1C_Test_DM_508.pdf. You need diabetic tx! ...Read more

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After being on METFORMIN500 for 7 months. My blood sugar got normalized. A1C now 5.3 Mean plasma glucose 111.Fastin (phentermine) 98.the2 hour test 87. Did medicatin correct the problem and how is that possible?

After being on METFORMIN500 for 7 months. My blood sugar got normalized. A1C now 5.3 Mean plasma glucose 111.Fastin (phentermine) 98.the2 hour test 87. Did medicatin correct the problem and how is that possible?

Great: Its probably a variety of causes you are likely eating better less carbs less sugars and the medication is helping you utilize the Insulin your pancreas is releasing. This is what we hope will occur. Speak to your doctor they may want to keep you on the drug or consider removing it and following the glucose levels should they believe your habits are helping normalize the sugar. ...Read more

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My child had bad stomach flu and her glucose blood level was 135. Can being sick make it high? Is. 135 a concern after not eating and throwing up ?

My child had bad stomach flu and her glucose blood level was 135. Can being sick make it high? Is. 135 a concern after not eating and throwing up ?

Normal body response: When you are sick, your body secretes certain hormones in response to the stress on the body, including steroids. This will cause a rise in the blood glucose, even if the child hasn't been eating. It is totally normal and expected. She is not diabetic and nothing to worry about. ...Read more

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If plasma glucose 136, fasting is 105, am I a diabetic?

If plasma glucose 136, fasting is 105, am I a diabetic?

Probably not: You are defined as being pre-diabetic and probably not diabetic. The easiest way to determine if you are diabetic is to get your hemoglobin A1c tested. The good news is that pre-diabetics that exercise and change their diets can often return to normal. Avoid products with white sugar, white flour, white rice, and pasta. ...Read more

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Is an mean plasma glucose of 136 with an a1c 6.0 within normal range>?

Is an mean plasma glucose of 136 with an a1c 6.0 within normal range>?

Slightly eleváted la: I don't know if your glucose was a fasting level or not. If it was a fasting level it was slightly elevated. The Hgb A1c meàsures long term glucose control and should be below 5,7. So these tests both indicate that you have issues with glycemic control. ...Read more

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My baby is big but my plasma glucose test is normal as well as the others. Why?

My baby is big but my plasma glucose test is normal as well as the others. Why?

Large for gestationa: The mother has a large for gestational age infant. This is sometimes due to gestational diabetes. At times it is because of maternal overweight or the development of gestational diabetes in the future pregnancies. Even if the mother has normal fasting glucose, she should have glucose tolerance test and hemoglobin A1c to confirm that she does not have type 2 or gestatational diabetes. ...Read more

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What does it mean on a A1c where it shows a 6.1 for value and then mean plasma glucose of 140 being normal?

What does it mean on a A1c where it shows a 6.1 for value and then mean plasma glucose of 140 being normal?

Repeat test: The A1C test result reflects your average blood sugar level for the past two to three months. For someone who doesn't have diabetes, a normal A1C level can range from 4.5 to 6 percent. A result between 5.7 and 6.4 percent is considered prediabetes, which indicates a high risk of developing diabetes. When the test is used to diagnose, a level of 6.5 percent or more on 2 occasions is diagnostic. ...Read more

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Im 40 years old my fasting plasma glucose is 6.0 it is normal or high?

Im 40 years old my fasting plasma glucose is 6.0 it is normal or high?

Not normal: Fasting glucose of 6 mmol/l is equal to 108 mg/dl which put you in the pre-diabetes range (100-125 mg/dl). If this is the first time you see this, repeat it again to see if this was not just a lab error. If you truly worries about diabetes, ask for a a1c test on the next blood draw as well. This test is more stable and give an average of your last 3 month blood sugar. ...Read more

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Im 40 year old my fasting plasma glucose is 6.0 i want to know if it is high or low?

Im 40 year old my fasting plasma glucose is 6.0  i want to know if it is high or low?

High: I assume the 6.0 refers to mmol/l, a measurement typically used in europe. In the us, this would be 108 mg/dl. A fasting glucose above 100 mg/dl (5.5 mmol/l) is considered high. If it is above 125 mg/dl (7 mmol/l) it is consistent with diabetes. ...Read more

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Is fasting plasma glucose test by itself good enough to diagnose diabetes?

Is fasting plasma glucose test by itself good enough to diagnose diabetes?

No: Diabetes is diagnosed based on several criteria. One test is the fasting plasma glucose test, but this should be confirmed with a second elevated fasting glucose test. A glucose challenge test or a hemoglobin A1c test may be substituted as well. ...Read more

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Is the fasting plasma glucose test the best way to find diabetes of any type?

No: Diabetes is diagnosed based on several criteria. One test is the fasting plasma glucose test, but this should be confirmed with a second elevated fasting glucose test. A glucose challenge test or a hemoglobin A1c test may be substituted as well. ...Read more

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HemoglobinA1C 1year ago was 5.9% after 1 year of metformin500 twice now is 5.3% . But the Fasting Mean plasma glucose still above 115. Stop metformin?

HemoglobinA1C 1year ago was 5.9% after 1 year of metformin500 twice now is 5.3% . But the Fasting Mean plasma glucose still above 115. Stop metformin?

Stay on for now: You still have fasting hyperglycemia which increases your risk for developing diabetes. If you are tolerating metformin well, I would continue it for now. Studies show moderate aerobic exercise and a low glycemic diet can reduce the onset of diabetes in pre diabetics by 58%. Improve ur physical activity and diet then reevaluate need for metformin with repeat labs in 3-6 months. ...Read more

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My mean plasma glucose is 111; hba1c is 5.3. My doctor said i don't have diabetes, but isn't my glucose high?

My mean plasma glucose is 111; hba1c is 5.3. My doctor said i don't have diabetes, but isn't my glucose high?

No: A1c between5.7 to 6.5 indicated pre diabetes. > 6.5 indicates diabetes. Having said that diabetes is more like a gradient disease- by that what i mean is with an a1c of 5.3 your risk of diabetes is slightly higher than a person with a1c of 4.8. Life style modifications with diet and exercise will decrease this risk. ...Read more

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My fasting plasma glucose 162, 1hour post glucose 271, 2 hour post glucose 261, 31 weeks of pregnancy gdm detectd?

Yes!: Yes you most certainly have impaired glucose metabolism and gestational diabetes. This requires prescription medication, strict diet modification and exercise asap to prevent pregnancy complications. Good luck. ...Read more

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I got 179 mg in plasma glucose post prandial. Can I have diabetes?

I got 179 mg in plasma glucose post prandial. Can I have diabetes?

Impaired Tolerance: A blood sugar of 179 mg/ dl 2 hours after a meal or ogtt is in the diagnostic range of impaired glucose tolerance, pre-diabetes. This condition places patients at high risk for developing diabetes and is treated by physicians. Lifestyle modification is the most important aspect of treatment in order to avoid further progression to disease. ...Read more

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Doctor , I am 43 yrs old n my fasting plasma glucose is 102mg/dl and my post lunch plasma glucose is 149mg/dl, is it normal?

FASTING: Your fasting bs is normal, although some physicians believe that it should be under 95. A 2 hours post pandrial bs ideally should be under 120. A level of 149 is slightly elevated but not to be concerned. ...Read more

Dr. Cayce Jehaimi
2,590 doctors shared insights

Glucose (Definition)

Glucose is the basic sugar molecule and the source of energy throughout the living kingdom. We are programmed to easily detect it by taste in our foods as it is desirable but can be overdone with the modern diet. It gets out of control ...Read more


Plasma (Definition)

It is the fluid portion of both the blood and lymph system in which the ...Read more