Blood Donation Calculator
Blood Donation Calculator
Find out when you are eligible to donate whole blood again.
You can donate again on or after
Date
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Guidelines for Safe Blood Donation
Donating blood is a noble act that saves millions of lives globally. However, your body needs time to replenish the red blood cells and iron lost during donation. The World Health Organization (WHO) and local health guidelines mandate a specific resting period between whole blood donations.
Frequently Asked Questions
Why is the waiting period different for men and women?
Men have higher iron stores and replenish red blood cells faster. Thus, men can typically donate every 12 weeks (84 days), while women, who lose iron during menstruation, must wait 16 weeks (112 days) to prevent anemia.
What are the basic requirements to donate blood?
Generally, you must be between 18 and 65 years old, weigh at least 50 kg (110 lbs), and be in good health without any infectious diseases.