It covers services such as updates, changes and presentations about the study from the previous visit to the next visit, preparing the forms to be collected during the visit, requesting an appointment from the investigator, writing the letter before the visit, updating the necessary documents in the investigator\'s file during the visit, counting and collecting medication, checking laboratory results and documentation, follow-up of adverse events, serious adverse events, checking whether the volunteer files included in the study are correctly transferred to the case report forms in the study, where the whole process is controlled by the monitor, discussing the current status of the study with the investigator, and then writing the visit report and sending the follow-up letter.
