Table 1. Measurement of proteinuria in collected urine and determination of the protein/creatinine quotient in spontaneously voided urine (10, 28– 30, e4).

	24-hour urine collection	Protein/creatinine quotient in spontaneous urine	Albumin/creatinine quotient in spontaneous urine
Physiological	≤ 4 mg/m² BSA/hr (≤100 mg/m² BSA/d)	≤0.2 mg/mg (children 6-24 mo ≤0.5 mg/mg)	≤30 mg/g
Proteinuria	>4 mg/m² BSA/hr (>100 mg/m² BSA/d)	>0.2 mg/mg (children 6-24 mo >0.5 mg/mg)	30 – 299 mg/g, microalbuminuria
Marked proteinuria	>40 mg/m² BSA/hr (>1 g/m² BSA/d)	>2.0 mg/mg	>300 mg/g,macroalbuminuria

BSA, body surface area