Why doesn't donated blood clot while it's in the bag? Or does it?

1 Answer
Nov 4, 2016

The bag of blood used to store the donated blood contains anticoagulants which prevent clotting of the infused blood.


The blood is usually stored in a flexible plastic bag that contains sodium citrate, phosphate, dextrose and sometimes adenine. This combination keeps the blood from clotting and preserves it during storage.

Also the blood is stored in a refrigerator under controlled temperature to prevent any damage to the blood.