Noticing blood in your cat’s urine is a serious health concern that requires prompt veterinary attention. If you spot blood or red streaks in your cat’s litter box, it could indicate hematuria, a symptom of various underlying issues such as urinary tract infections, bladder stones, or more severe feline urinary tract diseases. While your cat may appear normal and unaffected, blood in cat urine should never be ignored. Early detection and diagnosis are critical to effectively treat the cause and prevent complications. Don’t wait—schedule a vet visit as soon as you see blood in your cat’s urine to ensure proper care and maintain your cat’s urinary health.

What is it Called When Cats Pee Blood?

When your cat’s urine contains traces of red blood cells, the diagnosis can be hematuria. But, when you can see flecks of black, brown, red, or pink in your cat’s urine with your naked eye, this is called gross hematuria. On the other hand, some forms of hematuria are only detectable with highly advanced equipment; this is called microscopic hematuria.

Causes of Blood in Cat Urine

It’s important to remember that blood in your cat’s urine is usually a symptom of an underlying condition, rather than being a specific ailment. But noticing bloody urine isn’t sufficient evidence to come to a proper diagnosis. In truth, unfortunately, a variety of diseases and conditions can cause your cat to urinate blood. That means, once it’s noticed, blood in your cat’s urine is serious and warrants investigation by a veterinarian.

Urinary Tract Infections Causing Blood in Cat Pee

A visit to your vet is your number one priority. Urinary tract infections arise after bacteria makes its way from the urethra up into the bladder. The microorganisms then begin to reproduce within the urine that’s stored inside. Inflammation of the bladder follows right on downstream into the urethra. This inflammation causes spasms in your cat’s urethra and makes them feel the urge to urinate more often. The result is irritation in the lining of your cat’s bladder along with the urethra which can result in mild bleeding.

Luckily, urinary tract infections are a relatively uncommon ailment for most cats. They tend to affect mostly senior cats who are more than ten years old and cats who suffer from diabetes. The presence of certain small bladder stones, called uroliths, can increase your cat’s risk of developing a urinary tract infection. The uroliths may also lead to irritation of the lining of the organs that facilitate your cat’s urination. Bladder infections can cause uroliths and uroliths can cause bladder infections.

Pandora Syndrome Causing Blood in Cat Pee

Much more common than urinary tract infections is Pandora Syndrome, otherwise known as Feline Idiopathic Cystitis (FIC). Pandora Syndrome is the most common form of Feline Lower Urinary Tract Disease (FLUTD).  FLUTD is a broad term used to describe a range of conditions that affect the lower portion of a cat’s lower urinary tract. As the name suggests, Pandora Syndrome has no easily identifiable single cause. Instead, it’s a term that’s used to describe varying degrees of inflammation of the bladder or urethra that are caused by many different conditions.

It is important to note that Pandora Syndrome is a diagnosis of exclusion.  By that we mean, that it is only diagnosed once all other common causes of your cat’s symptoms are eliminated. Unfortunately, Pandora Syndrome is often a chronic condition that waxes and wanes in severity. Consequently, it makes for a very frustrating disorder for cats, pet owners, and veterinarians.

Physical Obstructions in the Urinary System Causing Blood in Cat Urine

Your cat could have a urinary obstruction. Mostly occurring in male cats (though not exclusive to them by any means), urinary obstructions are a self-explanatory condition. It’s when something is literally preventing your cat from being able to effectively empty their bladder. Like with many diseases related to the urinary system, urinary obstructions can come from a variety of underlying issues. These include swelling caused by the inflammation in the urinary tract, urethral plugs, urethral or bladder stones, urinary strictures, or even tumors.

However, make no mistake: a urinary obstruction is a life-threatening emergency to tackle immediately. A cat with an untreated urinary obstruction is at significant risk of mortality. This happens because being unable to urine causes a buildup of urine within the kidneys. This buildup of waste products in the kidneys leads to kidney failure which can kill you cat. If you notice your cat is really straining to urinate and only produces a little blood instead of urine, take them to a vet immediately.

Bladder or Urethral Stones Causing Blood in Cat Pee

Stones can develop anywhere along a cat’s urinary tract but will most often form in their bladder or urethra. Stones form via the accumulation of minerals, crystals and other natural substances within an organ. Once they compact and form into a stone, these pesky little things start rubbing against the walls of the bladder or urethra. As the stones move around in the bladder or down through the urethra, they can cause inflammation, irritation, and eventually bleeding.

Some cats who are afflicted by bladder or urethral stones may have blood continually show up and disappear in their urine. This can make it especially hard for their owners to know if something is wrong and whether their cat requires veterinary attention.

How is Blood in Cat Urine Diagnosed?

The first step in obtaining a diagnosis of why your cat is urinating blood is a complete physical examination. During this procedure, your vet will examine your cat’s belly, listen to their heart and lungs, and inspect their genitals and urethra. They may also check for any physical abnormalities like bumps or tumors. The physical exam will also clue your vet into your cat’s body condition score and physical fitness levels.

After the physical exam concludes, your vet will ask you a series of questions aimed at better understanding of your cat’s medical history, home life, and stress levels. The reason for this is that, like all animals, cats can respond psychosomatically to external stressors. If something at home is causing them to feel anxious, their stress can physically manifest itself in the form of urinary troubles.

Have Your Cat Tested

Your vet may order a series of labs or tests to gain deeper insight into what is causing blood to appear in your cat’s urine. These might include a urinalysis, urine culture, complete blood count (CBC), and imaging with ultrasound and/or x-rays.

Urinalysis is a lab procedure that’s used to discover if any crystals, bacteria, red blood cells, white blood cells, cancer cells, or even sugar are present in your cat’s urine. Likewise, your vet can use urine culture tests to uncover bacteria in your cat’s urine if they suspect a bacterial infection. They may also conduct a complete blood count with a chemistry profile to gauge how well your cat’s organs are working. Furthermore, this test will detect signs of heart disease, immune system disorders, or other medical conditions that might cause bloody urine.

Imaging tests like x-rays or abdominal ultrasounds can also reveal whether kidney, bladder or urethral stones or neoplasms are to blame. Even if growths or tumors aren’t the cause, these imaging tests are still useful in detecting inflammation and/or uroliths (stones)  in organs involved in urination.

How is Blood in Cat Urine Treated?

The exact plan to treat blood in your cat’s urine will be entirely dependent on what the problem is. There is a range of treatments that may be recommended, and they vary greatly in intensity. For example, a simple course of antibiotics might be the answer if a bacterial infection is the cause of your cat’s bloody urine.

However, something like a urethral blockage will necessitate surgery to properly correct the issue. On the other hand, some severe-sounding conditions like bladder or urethral stones will likely resolve with prescription food or medication.  These diets may dissolve the smaller stones. Larger stones, however, may still require surgical removal.

Idiopathic causes of bloody urine, such as Pandora Syndrome, along with more common conditions like Feline Lower Urinary Tract Disease (FLUTD), require a comprehensive treatment plan. A veterinarian will develop a strategy focused on managing discomfort and making lifestyle adjustments. This may include prescribing pain relief medications to address inflammation and irritation. Additionally, the use of feline pheromone diffusers may be recommended to help reduce stress and promote relaxation, which can lower the risk of flare-ups associated with urinary issues.

How to Care For Your Cat with Hematuria at Home

Once you’re back home from the vet’s office, you’ll want to monitor your cat closely for the next couple of weeks. Keep them inside where you can keep an eye on them.  Even more, make sure that they’re eating properly and drinking plenty of fluids. Additionally, keep them on a regular schedule with any prescription medications. If the medication is an antibiotic, remember to make them finish the entire course regardless of whether or not they appear to be getting better.

There are a number of environmental and routine changes that you might want to consider to limit your cat’s stress and to aid in her recovery. For starters, make sure that your cat has plenty of choices in where they rest, play, drink water, eat, use the litterbox, and sleep. This will minimize the chance that they come into conflict with other cats they live with. Likewise, be sure to provide adequate litter box space. Conventional wisdom dictates that you need one box for every cat, plus an extra one. Be sure to clean them daily.

Keep Your Cat Hydrated

It may seem obvious, but proper hydration is key in preventing urinary problems. Consider getting a circulating water fountain to encourage your cat to drink more water. Floating ice cubes or letting the tap drip water in the sink can also encourage your cat to drink more.

And, if you haven’t already, you might want to think about switching your cat over to wet/canned food. Not only will they appreciate the scrumptious treat, but these watery, canned delights can help prevent the formation of crystals that develop into stones. Moreover, make sure to give your cat wet food that is formulated for their specific life stage to ensure they get all of the essential nutrients and vitamins.

Electrolytes play a key role in supporting hydration in cats by helping replace fluids and essential nutrients lost due to stress or illness. Products such as Breeder’s Edge® Kitten Lyte are formulated to aid in maintaining fluid balance during these critical times.

Supporting Cat Urinary Health

Supplements like Doc Roy’s® Potassium Citrate Cranberry or Doc Roy’s® Cranberry Extra can play a valuable role in supporting your cat’s urinary tract health. Regular use of such supplements can help support overall urinary tract function, making them an important addition to your cat’s health regimen, especially for cats prone to urinary issues. Always consult your veterinarian before starting any new supplement to ensure it’s appropriate for your cat’s specific needs.

Don’t Ignore Blood in Your Cat’s Urine: Seek Veterinary Care Promptly

Blood in your cat’s urine is a serious warning sign that should never be ignored. Even if your cat appears healthy and is acting normally, it’s crucial to schedule a veterinary visit as soon as possible. Cats are experts at concealing pain and illness until conditions become severe. Early diagnosis and treatment of underlying causes can prevent complications, improve your cat’s quality of life, and ensure many more years of happy, healthy companionship. Prioritize your cat’s urinary health by seeking professional care at the first sign of blood in the urine. If you need help or have more questions on feline urinary health, call us at 800.786.4751.