Can a person function with only 50% kidney function during kidney failure?

A person can indeed function with only 50% kidney function during kidney failure, as the kidneys have a significant capacity to adapt and compensate for lost function. Remaining kidney function can continue to filter waste and excess fluids from the bloodstream, albeit less efficiently than normal. Many individuals may not even realize they have reduced kidney function until it diminishes further, as the body is capable of maintaining balance with a considerable reduction in kidney capacity.

The kidneys are designed to handle and manage various substances and maintain fluid and electrolyte balance, and they can operate effectively even when one kidney is lost or a part of both kidneys is not functioning adequately. People with around 50% kidney function can often lead relatively normal lives, although they might require regular monitoring and lifestyle adjustments to support their health.

It's essential to note that if kidney function continues to decline below critical thresholds (commonly below 15-20% function), medical intervention such as dialysis or a kidney transplant may become necessary. However, at the stage where a person still has 50% function, ongoing monitoring and management can frequently allow for stable health.