The average price of an over the counter blood glucose monitor is between $10 and $20. Many of the manufactures will offer a rebate of some sort which can result in a free blood glucose monitor.
A: A unit of whole blood is 450 milliliters, which is about 0.9510 U.S. pint. For components of blood, one unit is the amount of that substance that would normally be found in one unit of whole...
Last time I gave blood, they take 470mls of blood, plus four test tubes partially filled as samples for testing. Some tests would be to check I don't have any disease, others for lab tests I suppose.