What you can expect

By Mayo Clinic Staff

The glucose challenge test is done in two steps. When you arrive at your health care provider's office or lab, you'll drink about 5 ounces (about 148 milliliters) of a syrupy glucose solution that contains 1.8 ounces (50 grams) of sugar.

You'll need to remain in your health care provider's office or lab while you wait for your blood sugar level to be tested. Consider bringing a quiet activity with you.

One hour later, a blood sample will be taken from a vein in your arm. This blood sample will be used to measure your blood sugar level.

After the glucose challenge test, you can return to your usual activities immediately.

Oct. 28, 2015