Thanks for posting query.
Sudden rise in blood pressure up to 230/130 usually suggests hypertension
due to secondary cause like renal artery stenosis
etc.But here in your father's case it something different.
He is known case of hypertension since last 30 years and also diabetic since last 9 years.Hypertension and diabetes both can cause decrease in renal function if not adequately treated.Hence rise in creatinine,uric acid and blood urea can be due to uncontrolled diabetes
and hypertension.Also sudden rise in blood pressure up to 230/130 can be due to non-compliance to anti-hypertensive medicines or inadequate treatment.
Though the possibility of renal artery stenosis is less I would like to suggest to tests Urine for proteinuria
,USG-KUB and renal doppler study that will help for definitive diagnosis.
Hope this will help you to clear you doubts.
Wish you good health.