Just FYI... my medical was done on 6-Dec and doctor informed me that they just need to punch the Passport# in IRCC's eMed system and all pre-filled info is presented in front of them .....
As bestofluck already informed, I too went with ITA PDF printout, Passport, 2 Passport photocopies (bio pages only), 4 photographs in white background (normal passport size will also work) .... that's it.
Just make sure the form they give you says Test type as "Non-EDE/Worker" and all data on the form is correct (spellings n all). Also ask them if they will give u a copy of your results.
Lastly, the test fee will vary from Rs. 5100 (smaller centres) to Rs. 6750 (Big shots like Fortis, MAX etc.) for the same set of tests so make your choice accordingly
Hope this helps !