The answer here is dependent on the settings enabled or disabled. This setting can be checked by going to the Menu > Settings > Practice Setup > General > Miscellaneous Settings > Keep unseen lab results on dashboard for up to 7 days?.
A. If the practice setting is not selected, the first 20 recent lab results will display within the Lab Dashboard regardless of viewed or not viewed.
B. If the practice setting is selected, the most recent 25 entries will show that are marked as not viewed or viewed within 7 days.
*Any results after this 7 day period will NOT show within the dashboard regardless of viewed or not viewed status*