<prompt> Which one of the following studies is most sensitive for detecting diabetic nephropathy in early stage?MicroalbuminuriaCreatinine clearance testUltrasonographySerum creatinine level  <response>: Microalbuminuria is defined as excretion of 30-300 mg of albumin per 24 hours or 20-200 mcgmin or 30-300 mcgmg Creatinine on 2 of 3 urine collections. The detection of low levels of albumin excretion Microalbuminuria has been linked to the identification of incipient diabetic kidney disease. This phase calls for aggressive management to prevent or retard ove diabetic nephropathy. 