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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.
It depends  on the concentration of insulin in the vial you are using.    One commonly used concentration is 1â¦00 IU/ml, (sometimes called  U100) but this is NOT true for all insulin. If the concentration  is 100 IU/ml, then each ml contains 100 IU and the conversion is  100 units = 1 ml.