These are unopened, unexpired boxes of 50 count blood glucose test strips for use with Accu-Chek Aviva, Aviva Connect, Combo & Expert machines. I have 5 boxes with expiration dates ranging from 3/31/2025 - 8/31/2025. I have 1 box with a broken seal but the vial of test strips has not been opened. That expiration date is 5/31/2025. I am open to offers. Please note: This post/purchase is for ONE BOX of test strips. Please indicate if you would like multiple boxes.