Markers of kidney damage (≥ 1 present for > 3 months) |
Albuminuria (albumin excretion rate ≥ 30 mg/day; albumin-creatinine ratio ≥ 30 mg/g) |
Urinary sediment abnormalities |
Electrolyte and other abnormalities due to tubular disorders |
Abnormalities detected by histology |
Structural abnormalities detected by imaging |
History of kidney transplant |
Decreased glomerular filtration rate (GFR) (present for > 3 months) |
GFR < 60 mL/min/1.73 m2 (GFR categories G3a to G5) |
Reprinted from Kidney International Supplements, 3:19–62, KDIGO. Chapter 1: definition and classification of CKD, copyright 2013, doi:10.1038/kisup.2012.64, with permission from Elsevier.