For whole‑blood donation:

·       Most guidelines recommend a minimum of 12 weeks (3 months) between donations.

·       This allows your body to fully replace red blood cells and iron.

Some centers allow:

·       Up to 4 donations per year for men, and 3 donations per year for women, depending on hemoglobin and iron levels.

If your last donation was very recent or your hemoglobin is low, you may be asked to wait longer. RedLife can help track your last donation date and estimate when you are likely to be eligible again.