# Age, gender and weight — Blood donor deferral criteria compared across national blood services

For Age, gender and weight, blood service is Canadian Blood Services; waiting period is at least 17 years old; condition is to become a blood donor in Canada you must be at least 17 years old and meet minimum height and weight requirements; outcome is temporary deferral, recorded from its source on 2026-08-06.

- **Criterion:** Age, gender and weight
- **Blood service:** Canadian Blood Services _(our reading, not quoted from the source)_
- **Waiting period:** at least 17 years old _(verified: appears in the quote below)_
- **Condition:** to become a blood donor in Canada you must be at least 17 years old and meet minimum height and weight requirements _(verified: appears in the quote below)_
- **Outcome:** temporary deferral _(our reading, not quoted from the source)_

## What the source says

> To become a blood donor in Canada you must be at least 17 years old and meet our minimum height and weight requirements.

## Source

- https://www.blood.ca/en/blood/am-i-eligible-donate-blood/eligibility

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/).