Does someone with diabetes have urine that dries white?

Patient: My boyfriend is a 22 year old white male about 10-20 lbs overweight; he is concerned it is diabetes because of the fact that a white stain appeared in his boxers; the stain looked like a wet dream to me…but he claims it was urine that had dried white due to the sugar and glucose in his urine; is this something that happens often in people who are pre-diagnosed for diabetes?

Symptoms: White dried stains in boxers

Images:
Does someone with diabetes ...-1

Doctor: