When incompatible blood is given, antibodies and complement in the recipient plasma attack the antigens on the donor RBC. Hemolysis ensues The antigen-antibody complex activate the Hageman factor (factor XII), which acts on the kinin system to produce bradykinin
Still it is not advisable to take it after the expiry date written on the bottle. This is just for your information to let you know that you are safe. Anyway Saline Nasal spray is not going to do any harm even if you used an expired one. So forget about it.
Expiration Dates on Test Strips. I've now give up on hearing from an expert on this topic since I've posted the question twice and never received a reply. I have multiple vials of test strips with an expiration date of 10/13 . . . which means that they are technically expired. They have not experienced any heat, cold, or moisture issues. My glucose is in complete control with carb counting and exercise. I'd hate to simply toss these strips if they are still good.