If your travel date to Canada falls just a day or two before your medical exam's stated expiry, group members suggested this isn't automatically a problem, but a couple of precautions help:
- As long as you land in Canada before the expiry date on your correspondence letter, the medical exam is still technically valid for your entry.
- Consider doing a fresh medical exam anyway, purely so the port-of-entry officer has an unambiguous, clearly-valid record to reference rather than one that's cutting it close — this reduces the chance of extra questioning.
- Be ready to explain the timeline to the border officer if asked — having your correspondence letter and travel documents on hand to show the exam was valid at time of entry addresses most concerns on the spot.
If your travel date could realistically slip and push you past the expiry, it's safer to redo the medical exam before departing rather than relying on a tight margin.