18-19 G needle is used for blood transfusion 170-180 u pore filter is used Packed RBC's are stored at a temperature of 2-6? C. Hence, they should be rewarmed before use. Rewarming should be done within 30 minutes of collecting blood from blood bank Transfusion should be completed within 4 hrs of taking the blood from the blood bank FFP and cryoprecipitate are stored at -18 to -30? C. Transfusion with these factors should be staed ASAP as the factors are labile to heat and completed in 20 minutes