Williamsburg 500 N Highland St Williamsburg, IA 52361 Phone 319-668-2888 Fax 319-668-2093
A unit of blood is equivalent to approximately 1 pint or 450 milliliters, according to the Canadian Blood Services website. The average patient requires around 4.6 units of blood.
An infusion rate of 17mL/min allows an entire unit of blood to be transfused in 30 minutes. The usual recommended time period ranges between 1.5 and 2 hours per unit. The maximum time period allowed for infusion of a single unit of blood is 4 hours.