How should a doctor tell if i had diabetes or not?

Evaluating, testing: Diabetes is a problem with sugar metabolism with several types. Your doctor will ask you questions like do you uriinate frequently, are you thirsty and hungry all the time, do you have sweats and episodes of fatigue and does your vision get unstable. He will take a blood sample and determine the glucose level which is the prime number. He might check for sugar in the urine.