Unless there is a clear clinical diagnosis(e.g., patient in a hyperglycemic crisisor with classic symptoms of hyperglycemiaand a random plasma glucose $200mg/dL [11.1 mmol/L]), a second test isrequired for confirmation. It is recommendedthat the same test be repeatedor a different test be performed withoutdelay using a new blood sample for confirmation.For example, if the A1C is 7.0%(53mmol/mol) and a repeat result is 6.8%(51 mmol/mol), the diagnosis of diabetesis confirmed. If two different tests (suchas A1C and FPG) are both above the diagnosticthreshold, this also confirmsthe diagnosis. On the other hand, if a patienthas discordant results from twodifferent tests, then the test result thatis above the diagnostic cut point shouldbe repeated, with consideration of thepossibility of A1C assay interference. Thediagnosis is made on the basis of the confirmedtest. For example, if a patientmeetsthe diabetes criterion of the A1C (tworesults $6.5% [48 mmol/mol]) but notFPG(,126mg/dL [7.0mmol/L]), that personshould nevertheless be considered tohave diabetes.