Nurses perform blood sugar tests using a glucometer, which is a portable device that measures glucose levels from a drop of blood obtained via a finger prick. The procedure typically involves:
1. Cleaning the patient's finger with an alcohol pad. 2. Using a lancet to prick the side of the finger. 3. Collecting a drop of blood on a test strip. 4. Inserting the test strip into the glucometer. 5. Reading and recording the result displayed on the glucometer.