<prompt> Microalbuminuria is defined as protein levels of30-300 mgd151-200 mgd100-150 mgd301-600 mgd  <response>: The earliest manifestation of diabetic nephropathy is the appearance of low amounts of albumin in the urine 30 mgday, but 300 mgday, that is, microalbuminuria. Microalbuminuria is also a marker for greatly increased cardiovascular morbidity and mortality for persons with either type 1 or type 2 diabetes 