
While not curable, kidney failure in cats is treated using a range of therapies, with most aiming to reduce the kidneys’ workload, minimize waste products in the blood, replace lost nutrients, and manage clinical signs. Subcutaneous fluids are often administered to cats who have become dehydrated. Chronic kidney failure is not curable.
Full Answer
How long can a cat live with Stage 4 kidney disease?
How long can a cat live with stage 4 kidney failure? Cats in stage four kidney disease had a median survival of only 1.16 months (35 days). Overall median survival time was calculated as 2.1 years (771 days) from the time of diagnosis.
What if your cat has kidney disease?
You should euthanize a cat with kidney disease once they continually show the following symptoms:
- Mental confusion
- Sudden weight loss
- Lethargy and loss of energy
- Dull and sunken eyes or blindness
- Refusal to eat
- Difficulty in breathing
Can cats be cured from kidney disease?
While not curable, kidney failure in cats is treated using a range of therapies, with most aiming to reduce the kidneys’ workload, minimize waste products in the blood, replace lost nutrients, and manage clinical signs. Subcutaneous fluids are often administered to cats who have become dehydrated. Chronic kidney failure is not curable.
Why do cats go into kidney failure?
It happens in cats of all ages and is usually the result of:
- Poisons, which are the most common cause of acute renal failure. ...
- Trauma, especially involving a broken pelvis or burst bladder
- Shock from losing a lot of blood quickly or rapid dehydration; overheating in hot weather, a significant rise in activity, vomiting, and diarrhea can all cause a big dip in ...
- Infection in the kidneys

How long do cats live after being diagnosed with kidney disease?
CKD is a progressive disease that slowly worsens, but the rate of progression is highly variable. Cats diagnosed with early disease have an average survival time of 3 years. Those with moderate disease live an average of 2 years. Those with advanced disease generally succumb to CKD within months.
Is chronic kidney disease in cats treatable?
CKD is not a curable or reversible disease, however, with early detection, support and treatment can improve your cat's quality and length of life by slowing progression of the disease. In fact, cats can live for many years with consistent management.
Can cats with kidney disease get better?
While there is no cure for chronic kidney disease, if it's detected and treated early your cat's longevity and quality of life can be improved.
How fast does chronic kidney disease progress in cats?
Kidney failure and death follow 8-10 years. Anything that causes kidney damage can accelerate kidney deterioration. Genetic diseases such as polycystic kidney disease can cause kidney failure at an early age, as can kidney damage from other causes. This leads to early kidney failure and death.
When is it time to put a cat down with kidney failure?
Understanding the final stages of kidney (renal) failure may help you better understand when it's best to let go....Indications your cat is not responding to treatment:Hiding, acting differently, mental confusion.Sudden weight loss and loss of energy.Dull, sunken eyes or blindness.Refusal to eat and very bad breath.
Can kidney failure in cats be reversed?
If diagnosed in time, acute renal failure can often be reversed. But chronickidney problems can be harder to treat. Found mostly in middle-aged and older cats, they develop over months and even years. If your cat is 7 years or older, pay special attention to their health.
How can I comfort my cat with kidney disease?
Ways To Help Cats with CKDDiet Modifications. A prescription diet restricting protein and phosphorus may be one of the first changes recommended with early renal disease. ... Medications. ... Hydration. ... Subcutaneous Fluids. ... Reduce Stress.
How do you slow down kidney disease in cats?
Dietary modification is an important and proven aspect of CKD treatment. Studies suggest that therapeutic diets that are restricted in protein, phosphorus and sodium content and high in water-soluble vitamins, fiber, and antioxidant concentrations may prolong life and improve quality of life in cats with CKD.
What are the symptoms of stage 4 kidney disease in cats?
Monitoring Stage 4 Chronic Kidney Disease: Reassess blood pressure and urine protein every 3 months. Home observation for decreased appetite, increased thirst or urination, increased vomiting, lethargy.
How long do cats with stage 3 kidney disease live?
Cats classified as stage three at diagnosis survived for an average of 1.86 years (679 days) but with some surviving up to 5.75 years. Cats in stage four kidney disease had a median survival of only 1.16 months (35 days). Overall median survival time was calculated as 2.1 years (771 days) from the time of diagnosis.
What are the 5 stages of kidney failure?
Five stages of chronic kidney diseaseStage 1 with normal or high GFR (GFR > 90 mL/min)Stage 2 Mild CKD (GFR = 60-89 mL/min)Stage 3A Moderate CKD (GFR = 45-59 mL/min)Stage 3B Moderate CKD (GFR = 30-44 mL/min)Stage 4 Severe CKD (GFR = 15-29 mL/min)Stage 5 End Stage CKD (GFR <15 mL/min)
Is kidney failure painful?
Does kidney failure cause pain? Kidney failure in itself does not cause pain. However, the consequences of kidney failure may cause pain and discomfort in different parts of the body.
What are the symptoms of end-stage kidney failure in cats?
The symptoms of end-stage kidney failure reflect the kidneys’ inability to compensate for significant damage and loss of function. These symptoms i...
How long does a cat live with kidney failure?
This depends on the stage of kidney failure. A cat may live several years with early-stage kidney failure, but less than that if the kidney failure...
Is kidney failure painful in cats?
That can depend on the underlying cause of kidney failure. For example, antifreeze toxicity can lead to a painful swelling of the kidneys.
Is kidney failure reversible?
The kidneys can withstand a lot of damage before they start to fail. However, once kidney failure sets in, there’s little chance for the kidneys to...
What is the life expectancy of a cat with kidney disease?
The life expectancy of a cat with kidney disease varies depending on the underlying cause and the stage at which it is diagnosed. Cats in the earli...
Are cats in pain with kidney disease?
For most conditions listed above, I wouldn’t classify kidney disease in of itself as painful. The systemic effects and long-term implications, howe...
Can a cat recover from kidney disease?
Some cats that experience acute kidney insults can recover, although there may be long-term effects that can lead to chronic kidney failure. Cats i...
What is a cat's kidney disease?
Healthy kidneys perform many important functions, most notably filtering the blood and making urine, so problems with kidney function can result in a variety of health problems for a cat.
What is the best treatment for CKD in cats?
Dietary modification is an important and proven aspect of CKD treatment. Studies suggest that therapeutic diets that are restricted in protein, phosphorus and sodium content and high in water-soluble vitamins, fiber, and antioxidant concentrations may prolong life and improve quality of life in cats with CKD.
What is the best way to evaluate kidney function?
To evaluate kidney function, veterinarians will most often turn to blood tests and urine analysis (urinalysis) to evaluate the concentrations of waste products and other components that healthy kidneys normally filter or regulate.
Why do cats have lethargy?
Another cause of lethargy in cats with CKD is the buildup of acids in their blood. The kidneys of cats with CKD may not excrete these compounds appropriately, making affected cats prone to blood acidification, or acidosis, a condition that can significantly affect the function of a variety of organ systems in the body.
What is the most specific indicator of kidney function?
Blood tests can determine the concentration of two important waste products: blood urea nitrogen (BUN) and creatinine, but creatinine is generally recognized as a more specific indicator of kidney function.
Why do cats have pink gums?
CKD may also decrease a cat’s ability to produce red blood cells, which can lead to anemia, a reduced concentration of red blood cells in their blood. This may cause their gums to appear pale pink, or in severe cases, whitish in color, and may make them lethargic. Diagnosis.
How long does it take for a cat to have kidney function?
Ideally, a veterinarian will base his or her interpretation of kidney function on at least two blood samples, obtained within two weeks of one another, from a normally hydrated cat that has fasted for 12-24 hours.
What are the treatment goals for kidney failure in cats?
Treatment goals include reducing the kidneys’ workload, minimizing waste products from the blood, replacing lost nutrients, and managing clinical signs. Treatments can generally be grouped into dietary changes and medications. Be aware that not every cat in kidney failure will need every available treatment.
What is kidney failure in cats?
Kidney failure is a complicated but manageable disease in older cats. If your cat is in kidney failure, work with your veterinarian and do your best to care for your cat.
How old is a cat when it has kidney failure?
Chronic kidney failure, also called chronic kidney disease, develops over many years. It usually begins when cats are about six years old and becomes progressively worse as the nephrons slowly die. When more nephrons die than can be replaced, kidney failure becomes apparent.
What happens when the kidneys stop working?
Kidney failure occurs when at least two-thirds of each kidney is damaged. With this much damage, the kidneys cannot perform their essential functions. Kidney failure can be acute or chronic. Acute kidney failure occurs when the kidneys suddenly stop working.
How to tell if you have advanced kidney failure?
Uremia, which is the life-threatening buildup of toxins and waste in the blood, develops and causes severe clinical signs. Reduced appetite. Weight loss.
What organs do cats have?
The kidneys are bean-shaped organs responsible for several vital functions, including filtering toxins and waste out of your cat’s bloodstream, producing urine, regulating the blood’s levels of nutrients, and conserving water.
What is the best diet for kidney failure?
Dietary Changes. The ideal kidney diet is low in protein, phosphorus, and sodium. A low-protein diet is needed to reduce the kidneys’ workload, but the protein must be of high quality. Phosphorus must be kept low because it can accumulate in the blood when the kidneys are failing.
What do cats kidneys do?
They principally act to remove waste products from the blood stream, regulate the levels of certain essential minerals such potassium and sodium, conserve water, and produce urine. What is chronic renal failure?
What vitamins are needed for cats with kidney failure?
Low potassium levels may also contribute to the worsening of the kidney failure. Vitamins B and C - when the failing kidneys are unable to concentrate the urine, these water-soluble vitamins are lost and affected cats need daily supplementation.
What causes CRF in cats?
Diseases or conditions that can eventually lead to CRF include: 1. Congenital malformations of the kidneys - such as poly cystic kidney disease in long haired cats (see handout: "Polycystic Kidney Disease in Cats" for further information) 2. Pyelonephritis - bacterial kidney infections. 3.
Why do cats drink more water?
Cats will often drink more to compensate for this increased rate of body water loss. This is known as compensated renal failure. After approximately two-thirds of the kidney tissues have failed, there is a rapid rise in waste products in the bloodstream and an apparent sudden onset of severe disease.
What is a CRF in cats?
Chronic renal failure (CRF), or chronic kidney disease (CKD) is mainly a problem in older cats. Only about 10% of the cases occur in cats less than three years old.
Why is my cat anemic?
Treatment of anemia - the kidneys initiate the production of red blood cell in the bone marrow. Many cats with CRF are anemic due to a lack of stimulation of the bone marrow. Newer drugs have been developed to help stimulate bone marrow production and may be prescribed for your cat.
What is the IRIS system for cats?
Your veterinarian will use the IRIS (The International Renal Interest Society) staging system. IRIS staging is based on serum creatinine levels, with sub-staging based on the presence of protein in the urine (as determined by a urin e protein:creati nine ratio [UPC]) and measuring your cat’s blood pressure.
What is kidney disease in cats?
Kidney disease in cats is the deterioration of the normal function of the kidneys. Healthy kidneys work to flush out toxins in the body and aid in regulating urine production. When the kidneys are compromised in any way, the body struggles to perform these tasks, leading to a waterfall of dangerous symptoms and illness.
What happens when a cat's kidneys fail?
When a major organ system such as the kidneys begin to fail, the cat’s overall health will begin to decline. Chronic kidney disease: In chronic kidney disease, the kidneys will begin to struggle over time. Cats can compensate for months to years in chronic disease, and owners can usually note changes in their health that have happened over time.
What is the difference between kidney failure and kidney disease?
Though the two are tied together, there is a major difference between kidney disease and kidney failure. Kidney disease is the chronic decline of kidney function over time, while kidney failure is the actual failing of the kidneys to the point where they cannot function properly any longer.
Why is it important to check kidneys in cats?
The threat of kidney disease in cats is one of the main reasons why routine exams and senior diagnostics are so important. By performing diagnostics at their recommended time, you can catch this disease in the early stages. Catching kidney disease in cats early will help to prolong your cat’s life, and prolong their quality of life.
How to diagnose kidney disease in cats?
The only accurate way to diagnose kidney disease in cats is through diagnostic testing. Your veterinarian will often perform diagnostic blood work and urine analysis testing. By reviewing the levels of their kidney enzymes and the components of their urine, they can come to an adequate diagnosis. The threat of kidney disease in cats is one ...
How long can a cat live with kidney disease?
With proper management of the disease, life expectancy can range anywhere from a few months to several years.
Why do cats need IV fluids?
Because of these dangerous factors, a cat will need to be on IV fluids in order to help flush the toxins in their system and take some of the stress off of the kidneys.
Overview
Kidneys filter toxic waste products from the blood into the urine so that your cat can pee them away. If the kidneys aren’t working properly, waste products build up and cause illness. There are two types of kidney disease, ‘acute’ and ‘chronic’. This article focuses on chronic kidney disease (CKD).
What is Chronic Kidney Disease (CKD)?
There are two types of kidney disease, ‘chronic’ and ‘acute’. This article focuses on chronic kidney disease.
When to contact your vet
If you notice any of the symptoms above, contact your vet. The earlier kidney disease is detected, the better the chance of slowing further damage and the longer your cat is likely to live.
Causes of chronic kidney disease
Many cats develop kidney disease when they reach their senior years (8+) due to wear and tear on the kidneys throughout life.
How will kidney disease affect my cat?
The kidneys make sure the right amount of water stays in your cat’s body. Diseased kidneys don’t retain water, so cats with CKD drink and pee much more than usual.
Treatment
Damage to the kidneys can’t be reversed but lots can be done to slow further damage and improve symptoms.
Not eating?
If a cat with kidney disease stops eating, they are at risk of becoming even more poorly. It’s better that they eat something rather than nothing.
What is a cat's kidney disease?
If the kidneys are not functioning normally for more than three months, it is referred to as ‘Chronic’ Kidney disease (CKD). CKD is one of the most common conditions to affect older cats (those over 7 years of age). It occurs when there is long term, irreversible damage to the kidneys. It is a progressive condition, ...
How long can cats live with kidney disease?
It is a progressive condition, but the rate at which this occurs can be highly variable between cats. Some cats can live for many years with a gradual worsening of signs.
What causes CKD in cats?
Chronic kidney disease in cats is sometimes known to be caused by: Ongoing inflammation of the glomeruli (individual units within the kidney) Damage to the kidneys following a kidney infection. Toxin damage. Excess protein loss through the kidneys.
How to tell if a cat has kidney failure?
In acute kidney failure, the cat will show signs in a matter of hours or days. They can include: 1 Sudden anorexia (not eating) 2 Vomiting (sometimes with blood) 3 Diarrhoea 4 Strange smelling breath 5 Seizures 6 Some cats may urinate more than usual, while others may produce no urine at all.
Why do cats urinate so much?
Cats with acute renal failure will feel very unwell in a short space of time. They often seem to be in significant pain due to swelling of the kidneys and may collapse or cry constantly.
What is it called when the kidneys are not functioning properly for more than 3 months?
If the kidneys are not functioning normally for more than three months, it is referred to as ‘Chronic’ Kidney disease ( CKD).
How long does it take for a cat to show signs of kidney failure?
In acute kidney failure, the cat will show signs in a matter of hours or days. They can include: Sudden anorexia (not eating)
1. High urea and creatinine levels
If the cat’s creatinine and urea levels are over 7.0 mg/dl and 150 mg/dl respectively, the end could be near. These numbers occur during the end-stage of the disease and rarely drop even after undergoing treatment.
2. Reduced urination & inability to urinate
While cats suffering from chronic kidney disease tend to urinate profusely, this changes once the condition is advanced. The cat will produce less and less urine over time, and the worst case is when they cannot urinate at all.
3. Bowel and bladder incontinence
Instead of experiencing reduced urination and an inability to urinate, some cats develop the opposite once the condition is advanced. The cat will urinate and/or poop wherever they are lying due to the inability to control bowel and bladder movements.
4. Extreme weight loss
Weight loss is common in older cats due to loss of muscle mass as a result of the body’s reduced efficiency in digesting and building proteins. A cat suffering from chronic kidney disease can get extremely thin to the extent the ribs, spine, and hip bones protrude under the skin.
5. Not eating or drinking
If your cat is suffering from kidney failure and reaches a point where they refuse to eat or drink, you should be concerned. Failure to eat or drink will lead to lethargy, dehydration, and weight loss.
6. Congestive heart failure
Another sign a cat is dying of kidney failure is having heart problems such as congestive heart failure. It’s a condition where fluids leak out of the veins and build up in the lungs, around the lungs, or in the abdomen. If the fluids are not drained off, the cat will eventually drown from the fluids in the lungs.
7. Bad breath and body odor
Most cats with chronic kidney disease have bad breath that smells like ammonia. This gets worse as the condition advances. While it’s possible to treat bad breath, it will only get worse and worse as toxin levels in the cat’s body increase.

Health
Function
- The kidneys are part of the renal system (Figure 1), the bodys system for filtering impurities out of the blood. Urine produced in the kidneys is carried to the bladder by the ureters and from the urinary bladder to the outside world by the urethra.
Symptoms
- Clinical Signs Cats with CKD may experience a buildup of the waste products and other compounds in the bloodstream that are normally removed or regulated by the kidneys. This accumulation may make them feel ill and appear lethargic, unkempt, and lose weight. They may also lose the ability to concentrate their urine appropriately, and as a result they may urinate gre…
Diagnosis
- Diagnosis To evaluate kidney function, veterinarians will most often turn to blood tests and urine analysis (urinalysis) to evaluate the concentrations of waste products and other components that healthy kidneys normally filter or regulate. Blood tests can determine the concentration of two important waste products: blood urea nitrogen (BUN) and creatinine, but creatinine is generally r…
Research
- *Recently, a new test measuring the concentration of symmetric dimethyl arginine (SDMA), a waste product of protein metabolism, has been used as a way to detect chronic kidney disease earlier than previously available tests. While further studies are required to determine whether early intervention based upon SDMA testing will translate into improved outcomes for cats with …
Treatment
- Treatment Although there is no definitive cure for CKD, treatment can improve and prolong the lives of cats with this disease. Therapy is geared toward minimizing the buildup of toxic waste products in the bloodstream, maintaining adequate hydration, addressing disturbances in electrolyte concentration, supporting appropriate nutrition, controlling blood pressure, and slowi…
Prognosis
- Prognosis Some cats respond very well to treatment for CKD while others do not, so the prognosis for CKD in affected cats is quite variable. Some studies suggest that cats that lose more protein in their urine have less favorable prognoses. There is evidence suggesting that the earlier CKD is diagnosed and treatment is initiated, the better the ou...