Does an expired diabetes test strip read accurately?
If it’s expired it’s not guaranteed of the claimed accuracy. Neither can you claim any false information of the product. Products has its shelf life. Which means though unused it still has it’s limits. This is to ensure product quality, and, as what you said, accuracy. If I were you get a new one. It does not cost that much compared to the risk of an expired test strip. Diabetes is not something to ignore or play about.