follow up on (something)

follow up on (something)

1. To contact someone again or at a later time to get more information about something. Is the project is still on schedule? Please follow up on this with Ingrid to be sure. The doctor's office never called me back, so I'm going to follow up on that tomorrow.
2. To check that something was done properly. Ben never follows the instructions I give him, so can you please follow up on his assignment?
See also: follow, on, up