James R. Frysinger wrote: >he mentioned a "unit of blood" stating that it was roughly a pint or half of a quart.
The amount in a unit is very variable because of how it is collected. See the sizes of bags come in rational metric sizes, at least for the following supplier (I suspect that they all do): www.baxterfenwal.com/jsp/products/wholeBloodFamily.jsp "a unit of blood (about 400 to 500 ml" http://clinicalstudies.info.nih.gov/detail/A_1999-CC-0168.html "one unit of blood (450-500 ml)" www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=1131 1689&dopt=Abstract "unit of donated blood (450 mL)" www.cdc.gov/ncidod/eid/vol8no8/02-0025.htm There is a difference between units collected and units delivered (because treatments reduce the volume). http://blood-bank.egypt.com/professionals.html
