Warrick: "That's a lot of blood..." Random detective: "How much d'you figure?" Warrick: "About 2-3 pints." Random lady detective: "Nobody loses that much blood and lives." I once lost 3 litres (6 pints) of blood once when my throat hemorrhaged when I got my tonsils out at 15. Mind, I spent 3 more days in the hospital and was on iron supplements for 6 months.