A 56-year-old patient presents to the clinic for a routine follow-up. The provider orders a fasting plasma glucose test to evaluate the patient's glycemic control. How should the medical assistant instruct the patient to prepare for this test?
Advise the patient to avoid eating sweets and sugary beverages 24 hours before the test
Tell the patient to have a light breakfast early in the morning on the day of the test
Recommend the patient to fast for at least 15 minutes prior to the test
Instruct the patient to not consume any food or liquids except water for 8 to 12 hours before the test
A fasting plasma glucose test requires a patient to not eat or drink anything except water for at least 8 to 12 hours before the sample is taken. This ensures that the test measures the patient's baseline glucose level without any influences from recent food or drink intake. Eating prior to the test could provide inaccurate results by increasing glucose levels temporarily. Informing the patient to only have water abolishes the potential for interference, and the 8 to 12 hour window is a commonly recommended fasting period for such tests.
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