There are tracked data fields on the summary sheet page. The problem is the reports function in AC leaves a lot to be desired. There is currently no way in AC to run a report asking for anyone with a HgbA1C > 6.5.
You could use the track data area on the summary page to enter in hgbA1C. The problem is when you run the report, you can only search for the HgbA1C with a specific value not anything greater than > or less than <. The report has to be either = or <>.
AC is currently aware of the limitations of the reports function