HBA1C report and advice. Lab pls tell!

Hello sir My mother age 52 she was done FNAC test neck region area found some area sample test found as TB Hence she was using TB tablet some AKURIT4 THE NAME OF TABLET THIS IS 2ND MONTH all of sudden we done some tests liKE LFT CBC HBA1C But HBA1C  fasting state given sample result is 6.7% came actual range 4.7% as per report we done this tests at government hospital My concern is before still my mother dont have diabetic and she never done HBA1C . NOW am fearing the report is right or not what to do pls tell further advice Whether to start diabetic tab or any further tests with different  private lab pls tell thanks Note May I know the TB tablet which she was taking any temporary  side effects of diabetic pls confirm thanks