CKD stage 5 is the most severe stage of chronic kidney disease, defined by a kidney filtration rate (eGFR) below 15. At this level, the kidneys are functioning at roughly 15% or less of their normal capacity, meaning they can no longer adequately filter waste and excess fluid from the blood. This stage is life-threatening without treatment, typically dialysis or a kidney transplant.
What the Numbers Mean
Your kidneys’ function is measured by a blood test called the estimated glomerular filtration rate, or eGFR. A healthy eGFR is above 90. Chronic kidney disease is diagnosed when your eGFR stays below 60 for at least three months, and the disease is classified in stages based on how far that number has dropped. Stage 5, the final stage, begins when eGFR falls below 15.
At this point, the kidneys are barely filtering the blood. Waste products, excess minerals, and fluid build up in the body, creating a toxic state called uremia. This buildup is what drives most of the symptoms people experience and is the reason treatment becomes urgent.
How Stage 5 CKD Feels
The symptoms of stage 5 CKD are widespread because waste buildup affects nearly every system in the body. Nausea, vomiting, and loss of appetite are among the most common complaints. Many people experience extreme fatigue, muscle cramps, and restless legs. Intense itching is also typical, caused by mineral imbalances and toxin deposits in the skin. Some people notice their skin darkening or developing a yellowish tone, and in advanced cases, whitish crystals of urea can appear on the skin’s surface.
The neurological effects can be subtle at first. Difficulty concentrating, forgetfulness, and drowsiness often develop gradually, sometimes so slowly that patients themselves don’t notice. As uremia worsens, these symptoms can progress to confusion, disorientation, emotional instability, and in severe cases, seizures or loss of consciousness. A persistent bad taste in the mouth, unexplained weight loss, shortness of breath, and easy bruising or bleeding round out the picture.
Bone and Blood Complications
Two complications that develop alongside the symptoms above deserve special attention because they significantly affect how you feel day to day.
The first is bone and mineral disease. Failing kidneys lose the ability to balance calcium, phosphorus, and parathyroid hormone in the blood. Over time, this causes bones to weaken and blood vessels to calcify. For people on dialysis, the treatment goal is to keep phosphorus between 3.5 and 5.5 mg/dL and calcium below 9.5 mg/dL. Achieving this usually requires a combination of dietary changes and medications that bind phosphorus in your food before your body absorbs it.
The second is anemia. About half of all people with stage 5 CKD are anemic because the kidneys produce less of the hormone that signals your bone marrow to make red blood cells. This is a major contributor to the crushing fatigue many patients describe. Treatment typically involves medications that stimulate red blood cell production, often combined with iron supplementation. The target is to bring hemoglobin levels up to around 10 to 11.5 g/dL, enough to relieve fatigue without raising cardiovascular risk.
Treatment Options
There are three main paths forward at stage 5: hemodialysis, peritoneal dialysis, and kidney transplant. The choice depends on your overall health, lifestyle, and preferences.
Hemodialysis
Hemodialysis uses a machine to filter your blood externally. It’s typically done three times a week at a dialysis center, with each session lasting about four hours. Some people do hemodialysis at home on a more flexible schedule. Before starting, you’ll need a minor surgical procedure to create a blood access point, usually in your arm. Current guidelines recommend preparing for this access when your eGFR drops to around 15 to 20, or roughly six to nine months before dialysis is expected to begin.
Peritoneal Dialysis
Peritoneal dialysis filters waste through the lining of your abdomen instead of through a machine. You fill your abdominal cavity with a special fluid through a small catheter, the fluid absorbs waste products, and then you drain it. This can be done manually several times a day or by a machine overnight while you sleep. It offers more independence and can be done at home or while traveling. Research comparing the two methods has found that peritoneal dialysis is not associated with worse survival than hemodialysis, and some data suggest a slight survival advantage in the first two years.
Kidney Transplant
A kidney transplant is the preferred treatment when possible. Survival outcomes are substantially better: five-year survival is around 80% for transplant recipients compared to 53% for patients who remain on dialysis. One-year graft survival has improved significantly over the past two decades, reaching approximately 98% for kidneys from living donors and 94% for kidneys from deceased donors.
The challenge is availability. More than 30,000 people on dialysis were added to the kidney transplant waitlist in 2024 alone. Among people placed on the list between 2019 and 2021, only 35% were living with a transplant after one year and 50% after three years. After three years on the list, 13% had died waiting and 28% were still waiting. A living donor, if available, dramatically shortens this timeline and provides better outcomes.
When Dialysis Starts
Reaching stage 5 does not automatically mean you start dialysis the next day. Current guidelines no longer use a fixed eGFR cutoff to trigger initiation. Instead, the decision is based on your symptoms, nutritional status, fluid balance, and overall health. In practice, most people begin dialysis preparation when their eGFR is in the range of 15 to 20, with actual initiation often happening when eGFR is closer to 10 to 12. On average, patients starting hemodialysis had an eGFR of about 11.7 six months beforehand. People with diabetes, heart disease, or other serious conditions tend to need dialysis at somewhat higher eGFR levels.
Choosing Conservative Management
Not everyone with stage 5 CKD chooses dialysis. Conservative management focuses on controlling symptoms, managing complications, and maintaining quality of life without dialysis. This path is most often chosen by older adults with multiple serious health conditions, for whom dialysis may extend life without meaningfully improving its quality.
A 2017 meta-analysis found median survival estimates of 6 to 30 months for patients on conservative management, compared to 8 to 67 months for those on dialysis. But those numbers come with a major caveat: the patients choosing conservative care were generally older and sicker, making direct comparison misleading. For elderly patients with limited life expectancy, the research suggests that conservative management paired with palliative care can be a reasonable and dignified choice. The decision is deeply personal and depends on individual circumstances, values, and goals.
Dietary Changes at Stage 5
Diet becomes tightly managed at this stage because the kidneys can no longer regulate minerals on their own. The primary restrictions involve potassium, phosphorus, sodium, and fluid intake. High-potassium foods like bananas, oranges, potatoes, and tomatoes are typically limited because excess potassium can cause dangerous heart rhythms. Phosphorus from dairy, processed foods, and dark colas needs to be restricted to protect your bones and blood vessels. Sodium is limited to help control blood pressure and fluid retention.
Protein intake also requires careful balancing. Before dialysis, moderate protein restriction can help reduce waste buildup. Once dialysis starts, protein needs actually increase because the filtering process removes amino acids along with toxins. A renal dietitian typically works with you to create a plan that fits your specific lab results and treatment schedule.