Azotemia appears when residual GFR is:
Answer is B (20-50% of Normal): Azotemia appears in the stage of Renal Insufficiency when the residual renal function (Residual GFR) is between 20 to 50 percent of normal.
50% -80 % of normal
20-50% of normal
10 -20% of normal
< 5% of normal