The length of time for protein(3+) to turn into kidney failure depends on what causes the urine protein(3+). The most common clinical cause of turning into kidney failure is crescentic glomerulonephritis. This disease progresses faster, as short as half a month or as long as 2-3 months, it will turn into renal failure. Therefore, it should be treated aggressively, with hormone shock therapy if necessary. For some nephrotic syndrome with urine protein (3+), generally active anti-immune therapy, 50% of the cases can appear to be cured, so it will not turn into kidney failure. For urine protein(3+) caused by glomerulonephritis, diabetic nephropathy, hypertensive kidney damage to turn into kidney failure, depending on the treatment of the original disease, such as after active and effective treatment for 3-5 years, also will not turn into kidney failure.