A 55-year-old patient with mild type II diabetes controlled with diet only came with a blood sugar report of 890 mg. He has no fever, No signs of any infection apart from few pus cells in urine. What could be the cause of such a high sugar? His blood counts went normal. No fever.

His HbA1c was13. C-peptide was normal. X-ray chest and abdomen USG was normal. What his sugar leaped so high?