Question: is 50 percent kidney function bad?
Answer: eGFR is an estimate of kidney filtration So if your eGFR is 50, your kidneys are probably filtering at about 50% of normal. It's very approximate though, and there are times when it can't be very reliable at all. It is not accurate at near-normal levels, so many labs report eGFR over 60 as just ">60" (more than 60).