Read the post by Molly on the American Diabetes Association diabetes forum. http://community.diabetes.org/t5/Adults-Living-with-Type-2/Are-Expired-Test-Strips-Really-Expired/td-p/59237
If the test strips were kept sealed they "probably" are good. The sure way to test this is to take a blood sample with a strip that has not expired, and then shortly afterwards, use a strip from the "expired" container. If readings are comparable, it suggests the "expired" strips are good to use.