Which stage of chronic kidney disease is characterized by an estimated GFR of 60-89 mL/min and persistent albuminuria?

The correct identification of this stage of chronic kidney disease is based on specific criteria for glomerular filtration rate (GFR) and the presence of albuminuria. In chronic kidney disease, the progression is classified into stages according to the GFR, which reflects the kidney's ability to filter waste from the blood, and the presence of protein (albumin) in the urine, which is an indicator of kidney damage.

Stage 2 of chronic kidney disease is defined by a GFR ranging from 60 to 89 mL/min alongside persistent albuminuria. This stage represents a moderate kidney impairment where kidney function is decreased yet remains relatively stable when compared to later stages. The presence of albuminuria signifies that there is ongoing damage to the kidneys, which could lead to further decline in kidney function if not managed appropriately.

The other stages do not fit this combination of GFR values and albumin levels. Stage 1 is characterized by a normal GFR of 90 mL/min or greater with albuminuria. Stage 3 includes a wider range of GFR values from 30 to 59 mL/min, indicating more significant impairment. Stage 4 shows severe kidney damage with GFR between 15 to 29 mL/min