Table 2. Prognosis of CKD by eGFR categories and albuminuria: KDIGO 2012.

				Persistent categories of albuminuria Description and range
				A1	A2	A3
				Normal to mildly increased	Moderately increased	Severely increased
				< 3 mg/mmol	3 – 30 mg/mmol	> 30 mg/mmol
eGFR categories (mLmin/1.73 m2) Description and range	G1	Normal or high	≥ 90
	G2	Mildly decreased	60 – 89
	G3a	Mildly to moderately decreased	45 – 59
	G3b	Moderately to severely decreased	30 – 44
	G4	Severely decreased	15 – 29
	G5	Kidney failure	< 15
Green represents low risk (if no other markers of kidney disease, no CKD). Yellow represents moderately increased risk. Orange represents high risk. Red represents very high risk. (Reproduced with permission from KDIGO 2012 Clinical Practice Guideline for the Evaluation and Management of Chronic Kidney Disease. Kidney Int, Suppl 2013;3:1-150.)