Pre-exposure prophylaxis (PrEP) — can I give blood? (Canadian Blood Services)
What is the waiting period for Pre-exposure prophylaxis (PrEP) — can I give blood? (Canadian Blood Services)?
For Pre-exposure prophylaxis (PrEP), waiting period is 4 months; condition is after stopping oral PrEP; 2 years after stopping injectable PrEP; outcome is temporary deferral; blood service is Canadian Blood Services, recorded from its source on 2026-08-06.
If you are taking pre-exposure prophylaxis (PrEP) medication to prevent an HIV infection, you are not able to donate. If you stop taking PrEP you must wait four months if you were taking oral PrEP before you can donate and must wait two years if you were taking injectable PrEP before you can donate.
— blood.ca, retrieved 2026-08-06
4 months
How long you must wait before donating (or the age/weight bound), exactly as this blood service prints it — the passage it comes from is quoted on the record page. National services genuinely disagree on the same criterion; check the service you would donate with.
- Criterion
- Pre-exposure prophylaxis (PrEP) verified
- Blood service
- Canadian Blood Services our reading
- Waiting period
- 4 months
- Condition
- after stopping oral PrEP; 2 years after stopping injectable PrEP
- Outcome
- temporary deferral our reading
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
Source
- blood.cahttps://www.blood.ca/en/blood/am-i-eligible-donate-blood/eligibility/medications-vaccinations