How bad is secondary chronic kidney disease stage 3 ?

What is Creatinine: Chronic renal disease is separated into stages, but these are determined by the level of creatinine clearance, and BUN levels. So, if you have worse kidney function, these levels will begin to rise. If you have stage 3 disease, it is usually worse than 2, but not as bad as 4. People with stage 4 disease may be eligible for transplantation.