Blood Draw And Fasting. If your health care provider has told you to fast before a blood test it means you should not eat or drink anything except water for several hours before your test. Many tests do not require fasting but lipid panels also known as cholesterol tests glucose testing and stool tests are a few that do.
These tests typically require fasting. A blood test ordered to check your cholesterol levels is usually done in the morning to get accurate results. The vitamins minerals fats carbohydrates and proteins that make up all food and beverages.
The tests check your blood sugar electrolyte and fluid balance and kidney function.
ZenBear 10 Replies. How much water should you drink before a blood test. If your provider orders blood work during a visit be sure to ask your provider if you need to fast beforehand. The fasting person does not break the fast by having blood taken for a test.
