Question:
understanding tests?
undermystars
2006-05-01 14:10:31 UTC
My docter just did a gluocose hemorglobin test last week it turned out 6 percent,136 average glucose,she said it was fine,but I have been told in the year before that my blood sugar had been running hign so I needed to make some changes in my diet which I did and i lost 25 pounds.I dont understand which test do you go by to see if your a diabetic the one you do at home where you just use a moniter and a blood sample or the one every three months,that the docter just did?
Ten answers:
jc
2006-05-02 09:56:46 UTC
The two tests you mention measure the same thing in two different ways.



The meter you use at home gives you an instant look at what your blood sugar is right now. It helps you make decisions about what to eat and how much insulin you need. However, testing with your home meter only gives you a snapshot of your blood sugar--it can't tell you if your bs is going up or down.



The hemoglobin test (usually called an a1c test) gives your doctor a three to four month average, taking into account all your highs and lows. This is the best test to know how you are doing in managing your bs throughout the whole day, every day.



Based on your result of a 6 percent a1c, I'd say you are doing a great job. It sounds like the adjustments you made in the past year have been very effective.
faded_shado
2006-05-04 08:58:14 UTC
The test you were given was a Hemoglobin A1C test- This is what I go by, this test gives a three month snapshot of what your blood glucose has been. I also test by blood sugar twice daily, exercise, avoid carbs and sugars and drink tons of water. Maybe you have been taking in too many carbs and sugars, try cutting those back in your diet.





Also known as: HbA1c, Glycohemoglobin, Glycated hemoglobin, Glycosylated hemoglobin

Formal name: A1c



How is it used?

The A1c test is used primarily to monitor the glucose control of diabetics over time. The goal of those with diabetes is to keep their blood glucose levels as close to normal as possible. This helps to minimize the complications caused by chronically elevated glucose levels, such as progressive damage to body organs like the kidneys, eyes, cardiovascular system, and nerves. The A1c test gives a picture of the average amount of glucose in the blood over the last few months. It can help a patient and his doctor know if the measures they are taking to control the patient’s diabetes are successful or need to be adjusted.

The A1c test is frequently ordered on newly diagnosed diabetics to help determine how elevated their uncontrolled blood glucose levels have been. It may be ordered several times while control is being achieved, and then several times a year to verify that good control is being maintained.



When is it ordered?

Depending on the type of diabetes that you have, how well your diabetes is controlled, and your doctor, your A1c may be measured 2 to 4 times each year. The American Diabetes Association (ADA) recommends testing your A1c:



4 times each year if you have type 1 or type 2 diabetes and use insulin; or



2 times each year if you have type 2 diabetes and do not use insulin.

When someone is first diagnosed with diabetes or if control is not good, A1c may be ordered more frequently.



What does the test result mean?

A 1% change in an A1c result reflects a change of about 30 mg/dL (1.67 mmol/L) in average blood glucose. For instance, an A1c of 6% corresponds to an average glucose of 135 mg/dL (7.5 mmol/L), while an A1c of 9% corresponds to an average glucose of 240 mg/dL (13.5 mmol/L). The closer a diabetic can keep their A1c to 6%, the better their diabetes is in control. As the A1c increases, so does the risk of complications.

Bear in mind that the correlation between mean plasma glucose (MPG) levels and A1c levels is an estimation only, dependent on methodology used for the calculation as well as other factors, such as the red blood cells life span. The exact MPG value reported on your laboratory report may not coincide exactly with the formula given above.



Is there anything else I should know?

The A1c test will not reflect temporary, acute blood glucose increases or decreases. The glucose swings of someone who has “brittle” diabetes will not be reflected in the A1c.

If you have an abnormal type of hemoglobin, such as sickle cell hemoglobin, you may have a decreased amount of hemoglobin A. This will affect the amount of glucose that can bind to your hemoglobin and may limit the usefulness of the A1c test in monitoring your diabetes. If you have hemolysis or heavy bleeding, your test results may be falsely low. If you are iron deficient, you may have an increased A1c measurement.
magicwriter65
2006-05-01 21:40:35 UTC
Testing at home (or in the car, or at the movies, or wherever...) helps people with diabetes know their blood sugar level, so they can deal approprately. It gives a relitively accurate up-to-the minute reading on blood sugar. The monthly test looks at over-all trends: Highs, lows, ectra. It can be effected by alot of things, but it give the average, not the up to the minute.
mjlee105
2006-05-01 14:21:40 UTC
both tests give you similar information, the doctor is collecting information for the long haul to try and spot trends, the daily tests are to show you what your actual diet and excersie choices are actually doing with your blood sugar.. The home ones are measuring only the sugar. the doctors test is measuring other blood components to see how they are being affected by the increase sugar in your blood.
purple
2006-05-01 14:52:03 UTC
The following glucose tests are performed to diagnose or monitor diabetes:



• A single blood sample taken anytime after eating that day may be sufficient for a diagnosis. A blood glucose level above 200 milligrams per deciliter (mg/dL) associated with the classic symptoms of hyperglycemia (thirst, frequent urination, and weight loss) indicates that diabetes is present.



• The fasting blood glucose test measures blood glucose levels after a 12- to 14-hour fast. While levels normally decrease during fasting, they remain persistently high in people with diabetes. A fasting glucose value above 125 mg/dL on at least two tests indicates diabetes.



• The postprandial blood glucose test measures blood glucose levels two hours after eating a meal. This test is usually done in people who have symptoms of hyperglycemia, or when the results of a fasting glucose test suggest possible diabetes but are inconclusive. Values of 200 mg/dL or more indicate diabetes.



• The oral glucose tolerance test is not necessary in most cases but is the method of choice to detect diabetes when results from the fasting and postprandial tests are borderline or inconclusive. In this test, glucose levels in the blood and urine are measured periodically for several hours following the ingestion of a beverage containing a specified dose (usually 75 grams) of glucose.



• Hemoglobin A1c (HbA1c), also known as the glycosylated hemoglobin or glycohemoglobin test, is used to monitor the effectiveness of therapy in people already diagnosed with diabetes. This test measures the amount of glucose attached to hemoglobin (the oxygen-carrying protein in red blood cells), which increases as blood glucose levels rise. Since hemoglobin circulates in the blood until the red blood cells die (half the red blood cells are replaced every 12 to 16 weeks), the HbA1c test is a useful tool for measuring average blood glucose values over the previous two to three months.



Purpose of the Test



• The fasting, postprandial, and oral glucose tolerance tests are used to diagnose type 1 or type 2 diabetes mellitus.



• HbA1c is used to monitor the effectiveness of dietary or drug therapy in the management of diabetes mellitus.



Who Performs It



• A lab technician or nurse. A wide variety of factors—including medications, some herbs and supplements, diet, recent illness, pregnancy, infection, stress, smoking, caffeine, and strenuous exercise—may affect blood glucose levels and interfere with the accuracy of the results.

• Chemical tests are performed on the blood and urine samples to measure the level of glucose. These results and the presence of risk factors for diabetes will help your doctor in making a diagnosis.

o If you test positive for diabetes, the condition can be treated with dietary measures, exercise, and, if necessary, oral glucose-lowering medications or insulin
kenji
2006-05-02 01:45:19 UTC
They can do an FBS test which is a fasting blood sugar to check if the sugar in your body within a certain period of time stays normal.



There's also the capillary blood test which is the test you do at home. It checks the sugar in your blood at that time.
not the mommy
2006-05-01 14:26:28 UTC
it is a combination of home glucoses and the one your doctor did. It is something that if it is borderline it can take 3-6 months to properly diagnose
patricia
2017-02-09 15:42:39 UTC
1
anonymous
2006-05-01 14:31:45 UTC
When/if you become a full-fledged diabetic, you will definitely know it because you're doctor will be telling you that as he is writing your prescriptions. Good job on the weight loss, btw.
anonymous
2006-05-01 14:14:44 UTC
im so sorry but all i read out of that was..blah blah..like..i dont understand..doctors want money out of u..nothing but that,,


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