If they working, you are supposed to receive a fromal MEDICAL REQUEST from Sydney, not a upfront medical test initiated ALL BY YOURSELF.
To pass or to NOT pass the medical test is up to clinic's doctor, not the IRCC, you understand?
If there is a problem with your medical test, clinic will inform you of it in advance and then upload the results to IRCC, and IRCC would ask you to see a doctor or something.
If clinic's doctor upload your medical results to IRCC without informing you of anything, it means you are healthy and already passed the test.