Certified Dietary Manager (CDM) Practice Exam

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What is the purpose of a fasting blood glucose test?

To measure cholesterol levels in the blood
To assess kidney function
To determine glucose concentration for diabetes screening
To check for liver diseases

The correct answer is: To determine glucose concentration for diabetes screening

The purpose of a fasting blood glucose test is to determine glucose concentration in the blood, which is essential for diabetes screening and management. This test measures the level of glucose in the bloodstream after a period of fasting, typically for at least eight hours. It is a key diagnostic tool that helps healthcare providers evaluate how well the body processes sugar and can indicate whether a person has diabetes or is at risk for developing it. Elevated fasting blood glucose levels can prompt further testing and evaluation, guiding treatment options to manage blood sugar effectively. Other tests like those for cholesterol, kidney function, or liver diseases involve different biomarkers and methodologies and are not focused on measuring blood glucose levels, which specifically relates to the diagnosis and monitoring of diabetes.