There is  a significant difference  between  research  activity and billing activity – can you clarify On Follow Up & Off Study statuses please? 

There is  a significant difference  between  research  activity and billing activity – can you clarify On Follow Up & Off Study statuses please? 

On Follow Up: The date the study subject is enrolled in the follow-up phase of the study regardless of whether study specific billing is  occurring  or not.   

Off Study: The date the study subject is completely off the study at study completion. No further activity occurs, including billing activity.