2007-05-16 12:04:50 · 3 answers · asked by Emily S 1 in Science & Mathematics ➔ Biology
I don't know what you mean. When you give blood or have to receive it in the hospital, they deal with it in units of pints.
2007-05-16 12:16:47 · answer #1 · answered by kncvb21345 3 · 0⤊ 0⤋
It varies. A unit of whole blood, that they collect when you donate at the Red Cross, is about 450-500 mls (so, about half a litre). A unit of packed cells, which is what they usually give you if you need blood is whole blood, minus most of the plasma, which amounts to about 200-250 mls. The volumes vary because people will have different packed cell volumes (hematocrit), resulting in different percentages of red cells to plasma. Also, they do not mix blood from different donations. This allows for traceability in case of infection, reaction etc.
2007-05-16 12:28:42 · answer #2 · answered by Labsci 7 · 0⤊ 0⤋
about 2.5 inches
2007-05-16 12:19:49 · answer #3 · answered by Anonymous · 0⤊ 1⤋