# Weight/Height — Blood donor deferral criteria compared across national blood services

For Weight/Height, blood service is American Red Cross (US); waiting period is at least 110 lbs; condition is students who donate at high school drives and donors 18 years of age or younger must also meet additional height and weight requirements; outcome is temporary deferral, recorded from its source on 2026-08-06.

- **Criterion:** Weight/Height
- **Blood service:** American Red Cross (US) _(our reading, not quoted from the source)_
- **Waiting period:** at least 110 lbs _(verified: appears in the quote below)_
- **Condition:** students who donate at high school drives and donors 18 years of age or younger must also meet additional height and weight requirements
- **Outcome:** temporary deferral _(our reading, not quoted from the source)_

## What the source says

> You must weigh at least 110 lbs to be eligible for blood donation for your own safety.

## Source

- https://www.redcrossblood.org/donate-blood/how-to-donate/eligibility-requirements/eligibility-criteria-alphabetical.html

Last verified: 2026-08-06. Review by: 2027-02-02.
Part of [Blood donor deferral criteria compared across national blood services](https://referencesource.org/blood-donor-deferral-criteria/).