Protein in urine is a manifestation of renal disease and is identified as a risk factor for
cardiovascular disease.
Normal urine protein excretion is less than 150mg/day or less than 140mg/m2 in children.
Routine urinalysis only detects albumin (macroalbuminuria). Microalbuminaria, which is not
detected by usual dipstick testing, is also an indicator of renal disease.