How to measure your blood sugar

Read the information from the manufacturer and your doctor to be sure you know how to use the blood sugar meter, lancet holder, and test strips.

Check the expiration date on your test strips. If you use expired test strips, your test results might not be accurate.

Many meters don't need a code from the test strips, but some will. If your meter does, make sure the code number on the bottle of test strips matches the number on your meter. If the numbers don't match, follow the directions that come with your meter for changing the code number.

Wash your hands with warm, soapy water, and dry them well with a clean towel.

The lancet holder is about the size of a pen. It holds the lancet in place and controls how deeply the lancet goes into your skin.

Take one strip from the bottle of test strips. Follow the directions to prepare your meter to receive the blood sample. Don't forget to put the lid back on the bottle right after removing the strip.

Use a lancet holder to prick the side of your fingertip with the lancet. You can use a lancet without a holder, but a holder makes it easier to use. You can prick any finger.

Touch the drop of blood with the correct spot of the test strip. Be sure to get enough blood to cover the test area on the strip.

If your finger continues to bleed, use a clean cotton ball to apply pressure to your fingertip to stop the bleeding.

Wait for the results. Most meters take only a few seconds to give you the results. It's important to record your blood sugar results and when you tested it. It's also helpful to note when you last had something to eat. Your doctor will use your record to see how often your blood sugar levels are in your target range. Some meters will store the results and let you share them with your doctor.