Short Answer
To make sure you do not have a fever or active infection.
Government of India Guidelines
Donors should be afebrile (free from fever) with a normal body temperature before donation.
Detailed Explanation
A fever may indicate an infection that could affect both your health and the safety of the donated blood.
If you have a fever, you'll usually be asked to recover fully before donating.
Important Reminder
If you're feeling unwell, postpone your donation until you've completely recovered.
❤️ Waiting until you're fully healthy helps ensure every donation is safe and valuable.
