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Time–temperature indicators versus temperature indicators for transfusion practice: Application in the real hospital setting

Temperature indicators (TIs) are used to monitor the surface temperature of red blood cell (RBC) units. We compared the utility of a newly developed time–temperature indicator (TTI) prototype, Freshzone TTI (FZTTI) (Freshzone, Seoul, South Korea) and two US Food and Drug Administration–approved TIs, Safe‐T‐Vue 10 (STV10; Temptime Corporation, Morris Plains, NJ) and Blood Temp 10 (BT10; Timestrip UK Ltd, Cambridge, UK).