| | Family Health | Teen Health How much blood is in a teen? The average amount of blood in a teenager is about 4.5 liters (approximately 9.5 pounds). This amount can vary depending on the individual's age, size, and sex. Teen Health - Related Articles The Effects of Mass Media on Human Behavior The Impact of Cyberbullying What Is Stage 1 Puberty? Physical traits that develop during puberty distinguishing children from adults? Can teen mothers bring their children to school? First Period Information What age is puberty over?
