Glucose test
A glucose test is a type of blood test used to determine the amount of glucose in the blood. It is mainly used in screening for any prediabetes or diabetes.[1] Patients are instructed not to consume anything but water during the fasting period. Caffeine will also distort the results. If you eat during the period in which you are supposed to have been fasting then you would show blood sugar levels that would cause your doctor to think you have diabetes. In people already having diabetes, blood glucose monitoring is used with frequent intervals in the management of the condition.[1]
There are several different kinds of glucose tests:
- Fasting blood sugar (FBS), fasting plasma glucose (FPG): 12 hours after eating
- Postprandial glucose test (PC): 2 hours after eating
- Glucose tolerance test:[2] continuous testing
- Random glucose test
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Reference ranges [edit]
Fasting blood sugar [edit]
A range of 4 to 7 mmol/l (72 to 126 mg/dl) before a meal is normal. Continual fasting levels of 5.5 to 7 mmol/l (101–125 mg/dl) causes concern of possible prediabetes and may be worth monitoring. 7 mmol/l (126 mg/dl) and above means a risk of diabetes.[citation needed]
After a 12 hour fast, a range of 3.9 to under 5.5 mmol/l (70.2 to 100 mg/dl) is normal (a level of 5.6 to under 7 mmol/l (100 to 126 mg/dl) is considered a sign of prediabetes).[citation needed]
Postprandial glucose [edit]
A level of < 10 mmol/l (180 mg/dl) 90 minutes after a meal is normal.[citation needed]
See also [edit]
References [edit]
- ^ a b MedlinePlus > Blood glucose monitoring Update Date: 6/17/2008. Updated by: Elizabeth H. Holt, MD, PhD. In turn citing: American Diabetes Association. Standards of medical care in diabetes -- 2008. Diabetes Care. 2008;31:S12-S54.
- ^ MedlinePlus Encyclopedia Glucose tolerance test
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