Originally Posted by Government
Providing proof of your result
When you arrive at the border, you must present an accepted negative molecular test result (paper or electronic proof) or proof of a previous positive molecular test result taken between 15 and 180 days (starting January 15, 2022, between 11 and 180 days ago) that includes:
traveller name and date of birth
name and civic address of the laboratory/clinic/facility that administered the test
the date on which the test was taken
the type of test taken
the test result
Keep proof of your test results with you for the 14-day period that begins on the day you enter Canada.