Supercooled storage of red blood cells slows down the metabolic storage lesion.

Red blood cell (RBC) transfusion, a life-saving intervention, is limited by reduced RBC potency over time. Cold storage at + 4°C for up to 42 days can reduce transfusion efficacy due to alterations termed the "storage lesion." Strategies to mitigate the storage lesion include alkaline additive solutions and supercooled storage to extend storage by reducing metabolic stresses.