What is the requirement to become a blood donor?

To my knowledge, to be a blood donor we must be healthy, age has reached 17 years old usually at this age tuh development is perfect, have weight above 45 kg, normal body temperature (36.6-37.5C), blood pressure and normal pulse pressure, have never donated blood more than 5 times a year. That's what I know. Body health and blood are very important for donors. People who are addicted to drugs should not donate blood.