Thanks for posting your query.
Are you suffering from diabetes or raised blood pressure?
Diabetes and high blood pressure
are two most common cause worldwide for renal derangement.
Raised serum creatinine indicates renal dysfunction
You should consult with internal medicine specialist/ nephrologist
and should go for thorough check up.
You should go for complete hemogram, renal function test, serum electrolytes and ultrasound imaging abdomen.
Kidney size below 8.5 cm indicates contracted kidney and suggests chronic kidney disease
Although kidney size may be more than > 8.5 cm in case of chronic kidney disease.
Loss of cortico-medullary differentiation is important in CKD.
Treatment depends on diagnosed disease; whether chronic kidney disease or acute renal failure
Dr. Mayank Bhargava