“…So if we detect all these features early, we can extend the quality life of CKD patients by timely interventions. [4][5][6] The CKD is defined as kidney damage for 3 months, as shown by structural or functional abnormalities of the kidney, with or without decreased GFR, manifest by either pathological abnormalities or by markers of kidney damage, including abnormalities in the composition of the blood , urine, or in imaging tests and also defined by GFR < 60 ml/min/1.73 m 2 for 3 months, with or without kidney damage. 7 The GFR is considered as the best measure of overall kidney function.…”