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Blood Tests and Insulin Injections

I am a first year medical student doing an investigation into why there is often a discrepancy between home blood glucose meters and the lab generated results. So far all I have managed to find is there is often user mistakes yet I am assured there is much more to it than this.

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I have been on a low carbohydrate diet for about a month. My blood sugar readings have dropped centering around 125 mg/dl [6.9 mmol/L]. I have cut my medications in half. Do the presence of ketones affect the readings that appear on blood glucose monitors?

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My 12 year old son was diagnosed 8 months ago. We started using an insulin pen in order to give him more flexibility. However, we couldn’t control his blood sugar. Is the insulin pen is suitable for children?

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Will an antibacterial hand sanitizer/cleaner that is used without water, interfere with accurate blood glucose results?

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I am 48 years old, and I was told I have prediabetes. I consulted a few doctors, and one of them told me that glucose meters are not accurate because they use capillary blood and that venous blood is more accurate? How true is this?

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My husband’s fingers are pretty sore, and I would like to find a monitor that is good and requires less blood.. I have been looking at a couple, and I have heard that it is still better to test on your finger and not on the arm because of the results What is the best meter on the market today?

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After my mother takes her insulin shot, she has a hard coughing spell. A friend who has diabetes said this could be caused from her insulin not being regulated as it should.

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When does the “postprandial” clock start ticking — at the first bite of a meal, or after the last bite of a meal? Sometimes there can be an hour’s difference between the first and last bite, and certainly that would have a great effect on a “two hour postprandial” blood glucose test.

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My uncle, who lives in India and is suffering from diabetes, wants to test his sugar regularly, and I want to purchase a meter for him, if available on the open market. Can you please suggest a good meter?

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I am interested in buying a PDA to keep track of my son’s blood sugar readings-carbs-insulin, etc, but I’m not sure what brands have these capabilities. Any suggestions?

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