when parents go to do the medical exam, the physician will give them 2 pieces of paper printed ( including their names passport number, UCI, etc),Good point! I think it depends on what is mentioned in the letter, in the letter received by @vividglider it doesn't appear that he was given the option to reply back to email. But i think the confirmation of medical exam form is separate from the medical examination report sent by panel physician, but i will leave it for seniors to comment! @HeisenbergCanada @YULIA-2016 @yvrgirl @AnNingCanada ....................
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ask parents to keep those papers, that's the confirmation of medical exam (proof). stating parents did the exam, if it is normal , the result will send to IRCC.