My question is: How much blood can the averige human being lose before entering a dangerous state? For example: Could I lose 2 litres of blood and survive for half an hour?

Anyhow thank you for reading in advance.

Sincerely,

Vito Schreurs

it will depend entirely on the age and fitness of the individual, the rate of blood loss and how quickly the blood loss is stopped and then replaced with a transfusion. For example a fit soldier in a battle field situation could definitely survive a 2 litre loss if then treated quickly.