What Causes Lack Of Appetite And Dark Colored Urine In A Diabetic?

My Husband was diagn a diabetic 1 in December last year. months later he was taken off incelin then left without any about I month later he was told to take diabetic tablets . He has know appetite and last week his urine was a dark colour . I has been sent to b tested . tonight I asked him if his urine was better colour in the day and would he let me look befor he went to bed. I was shoked . it looked like a cederment of colour of tea was in the urine . he doesn t want to get up to go anywhere now are we ok to wait until the morning , and what is it.