I was deferred for low hemoglobin. When can I donate again?
What this means
- A low reading on the day means you are asked to wait.
- Iron-rich foods, and sometimes a supplement your clinician suggests, help you recover.
- Your hemoglobin is checked again at your next visit.
What to do next
Build up your iron, set a reminder, and try again in a few weeks.
When to call the center: Call your clinician if you are deferred repeatedly.
If you need to wait
Often a few weeks to a couple of months while you rebuild iron.
Exact timing is confirmed by the center. Set a reminder so you do not have to track it.
Set a return reminderWhy this rule exists
The hemoglobin cutoff protects you from becoming iron-depleted by donating.
This is general educational guidance, not a final eligibility decision. Donation centers make final eligibility decisions during confidential screening. Rules may vary by center, donation type, location, and current policy.
Were you already turned away for this reason? See the comeback plan
Find a place to donate
Search by city, ZIP, state, or center name, or use your location to see the closest centers.
Related questions
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Read the full pledgeSources and review
The guidance on this page reflects published criteria from these organizations. Eligibility and procedures vary by center and country, so confirm specifics with your donation center.
- American Red Cross
- AABB (Association for the Advancement of Blood & Biotherapies)
- U.S. Food and Drug Administration, Blood Donation
- Canadian Blood Services
- Last reviewed:
- Next review due:
- Reviewed by:
- Reviewed against American Red Cross, AABB, and U.S. FDA donor guidance
- Confidence:
- High confidence