A patient complains of thirst, blurry vision, numb hands, and frequent urination. Which statement best explains why a doctor performed a blood glucose test on this patient? (A blood glucose test tests for levels of sugar in the blood.)

Thirst and frequent urination, along with blurry vision and numbness, can be signs of diabetes. A blood glucose test measures sugar in the blood, so the doctor can use it to check whether the patient may have diabetes. The best choice is “The patient might have diabetes.”

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