How quickly is donated blood replaced?

Blood volume will be replaced within a few hours and can be speeded up by drinking adequately on the day of the donation.

The red cell count will be the same in approximately three months. Red cells live for approximately 120 days or four months and regenerate constantly, regardless of blood donation.

Blood iron concentration recovers in approximately a couple of months.​ It’s important that blood donors get enough iron from their diet to replace the iron loss.

To prevent iron deficiency donors must have minimum intervals between donations, and donors in high risk are provided iron supplementation.