1. Broach (one's) claret To draw blood, typically in some sort of fight

2. Lee has stepped over zonked-out bodies to draw blood for syphilis tests.

3. 24 First to draw blood was John, who gallantly climbed into the boat and held Starkey.

4. Like people, leeches do not always draw blood first time, and some have to be Coaxed into biting.

5. The other method is to draw blood from the donor, separate it using a centrifuge or a filter, store the desired part, and return the rest to the donor.