In the IME form, what is stated is that, you are requested to make arrangements for your medical examination within (usually 30 but it changes) days
I read this as the medical examination needs to be done / completed within the period (30days) stated in the IME form and does not say that time of transmittal of the results from Medical Office to CEM is included in that period.
I suggest as soon as completed na yung Medical, send an official notice to CEM (via email, or post mail - mas maganda) - notifying them that as you have complied with their instructions and that medical examinations have been performed on <date>, at the medical offices of <name of Immigration Medical Examiner/physician>, then include copies of your official receipts. So tapos ka na sa responsibility of compliance sa medical instructions within 30days. Transfer of medical results is now responsibility of the Medical Office to CEM.
I requested GCMS notes recently and I saw that the letter I sent to them in June after I completed my medical, informing them of compliance to the MR, was noted and received in my file, but the actual transmittal of results was done a few weeks after my medical exam and after I sent the letter.