Between 30–300 mg/24. Microalbuminuria can be diagnosed from a 24-hour urine collection (between 30–300 mg/24 hours) or, more commonly, from elevated concentrations in a spot sample (30 to 300 mg/l). Both must be measured on at least two of three measurements over a two- to three-month period. an Albumin level above the upper limit values is called 'macroalbuminuria', or sometimes just albuminuria.
30-300 mg/day. Microalbuminuria is Albumin excretion between 30 and 300 mg/ day. The normal kidney will put out less than 20 mg/day., .