Kidney Function Blood Test Fasting Or Not. Their main job is to filter wastes and extra water out of your blood to make urine. What your kidneys do.
Often doctors will order more than one test at a time to get a broader picture of the. Creatinine and bun will change very little if you are non fasting. If the blood test is abnormal it cannot say what is causing the kidney problem.
The tests check your blood sugar electrolyte and fluid balance and kidney function.
Controlling your blood pressure may help to protect your kidneys. The comprehensive test checks your liver function too. Their main job is to filter wastes and extra water out of your blood to make urine. Often doctors will order more than one test at a time to get a broader picture of the.