GLUCOSE TOLERANCE TEST Meaning and
Definition
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A glucose tolerance test (GTT) is a medical diagnostic test that measures the body's ability to metabolize glucose, a type of sugar. It is mainly used to determine if an individual has diabetes or a condition called gestational diabetes during pregnancy. The test involves the measurement of blood glucose levels before and after the consumption of a specific amount of glucose solution.
The process starts by the individual fasting for a certain period, usually overnight, to establish a baseline blood sugar level. Then, a sugary liquid containing a fixed quantity of glucose is consumed. Blood samples are taken at regular intervals, often every 30 minutes to two hours, over a set period, typically two to three hours. These blood samples are then analyzed to evaluate how quickly the body absorbs and processes glucose.
The results of a glucose tolerance test can provide valuable information about the body's ability to regulate blood sugar levels. If blood glucose levels remain elevated for an extended period following the consumption of glucose, it may indicate impaired glucose tolerance or diabetes. Conversely, if blood sugar levels return to normal quickly, it suggests that the body is efficiently managing glucose.
Overall, the glucose tolerance test is an essential tool in diagnosing and monitoring diabetes and gestational diabetes, allowing healthcare professionals to develop appropriate treatment plans and interventions.
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