Blood in Cat Urine: Causes and Home Remedies

blood in cat urine
(Last Updated On: April 17, 2021)

Cat peeing blood? It’s a cat owner’s worst nightmare: looking around and finding blood. When there are no injuries on your cat, you panic until you realize it’s bloody urine you’re looking at. It’s definitely frightful to see blood in cat urine, but luckily most of the causes are not fatal if you rush over to your vet for treatment.

blood in cat urine

Causes of Blood in Cat Urine

There are a few common causes for blood in cat urine, also known as hematuria. These are usually treatable if you get your pet to the vet quickly. The most important thing is to call your vet if you see your cat urinating blood outside the litter box or around it.

Don’t try and treat this at home! It could be serious. Even if it’s not, it’s best to get your vet’s opinion.

Urinary Tract Infections (UTI’s)

This is actually a common problem in humans, especially in females. Female cats deal with UTI’s too, but for them it’s a little more serious sometimes.
If you have an older cat, this is something you should look out for thanks to their more dilute urine. A UTI usually only affects the bladder. But if you leave it too long and it gets serious, it can start to involve the kidneys too.
Look for signs of weight loss, poor appetite, extreme thirst and increased frequency of urination. Also look out for straining to urinate before seeing blood in the urine.
Blood in the urine is a sign that the infection has been there for a while, so don’t waste any time getting to the vet. Medication can fix this infection in about a month, with six weeks being the maximum before your cat is fine again.

Crystals or Stones in Urine

Older female cats deal with UTI’s. Unfortunately though, younger (mostly male) cats are not free of worry. A common cause of bloody urine in younger cats is crystals that block up the urethra. T
his is quite serious. If the urethra is blocked, your cat can die in a few days due to kidney failure. While crystals are a little more common in male cats, both genders experience problems with stones and crystals.
Female cats more often get crystals that form into stones. They can wedge themselves in the kidneys, ureters, and the bladder. This can cause a UTI. Luckily, the stones are a little rarer. Both the stones and the crystals are simple to treat with diet if they can be dissolved or actual surgery to remove them.

Feline Lower Urinary Tract Disease (FLUTD)

This is yet another common cause of crystals. Two forms of crystals can be present that might turn into stones that any human dealing with stones knows are painful to pass. Male cats get stones too that might cause a urinary blockage that can become fatal. They prevent urination and poison the cat from the inside. This is known as uremic poisoning.

All cats can get FLUTD when they display painful urination, straining, or barely any urine. Male cats get blockages a lot though, and might vomit, lose their appetite, become lethargic, or even die if not treated properly. Your vet can feel around the bladder with ease and insert a catheter to help him go.

Interstitial Cystitis

Unfortunately, interstitial cystitis is much more difficult to understand. Doctors are just figuring out this disease, which is a very common cause for bloody urine.

In this case, you will see crystals, stones, UTI’s, and abnormal urine cultures. Thankfully, it treats easy with a change in diet and increased canned food for more hydration and a decrease in urine concentration.

Feline Idiopathic Cystitis (FIC)

If there are not crystals or bacteria in the urine, Feline Idiopathic Cystitis might be the cause. This is more of a disorder since there’s no specific cause, and might be brought on by stress. Treatment is simple though with fluids, reduction of stress, and supportive care.


Your cat might even be given the drug Amitryptiline, so be sure to ask your vet what’s best.

Trauma and Exposure can be Painful

Trauma, like stress, could be a cause. If the cat’s bladder was damaged in some way, they may go bloody urine. Go to your vet; they’ll know best. There’s also the cause of poison. Your cat might not have a UTI and you absolutely can’t figure out what’s wrong. What next?

They might have been exposed to rat poison. Your cat may start bleeding because the rodenticides are meant to kill the rodent by causing them to bleed to death.

Your vet will put your pet on Vitamin K to help them clot properly. The prognosis really depends on the speed of treatment.

My Poor Female Cat

If your female cat is over four months old and isn’t spayed, she could be in heat. We won’t go over the symptoms of heat for you here, but there is a possibility of blood in the urine. Run to your vet just in case, and maybe consider getting your cat spayed to make sure there are no poor lost kittens running around.

Disorders and Cancers

Humans have a bleeding disorder known as hemophilia. Cats can also develop such disorders. They might not have enough blood platelets or poorly functioning platelets, leading to bleeding in urine or bruises.

Bladder cancer, despite how rare it is, is another possibility. Once again, older female cats may suffer from this. If they aren’t responding to antibiotics for a UTI and display other UTI symptoms, this might be the answer. Chemotherapy and piroxicam are given, along with radiation. And if the tumor is small enough, surgery.

Blood in Cat Urine Male Cats

It’s a little strange to think about, but male cats actually might get worse faster than female cats. They are more prone to FLUTD and crystals, although female cats suffer from stones and UTI’s a little more.
Regardless of the problems each gender suffers from, they can both experience this issue of bloody urine. Male cats need treatment quickly, since the causes in male cats are more serious. Blockages are very common in male cats. Treat it within a few days and rush your male cat to the vet as soon as possible. Don’t let it get worse.

Home Remedies Cat Peeing Blood

  1. If your cat has urinary tract infection, try giving it cranberry juice. It is known to help stop bacteria from getting to and remaining on the lining of your cat’s bladder. Try to give your cat Vitamin C as well. That helps to make the lining of your cat’s bladder stronger. It also helps to boost your cat’s immune system in general and is anti-inflammatory.
  2. Understand that high pH levels in your cat’s diet can contribute or even lead to urinary tract infections. To reduce the chances of this, make sure your cat’s diet is more balanced and perhaps, if possible, even phase out dry food. It could actually be a reason. Keep an eye out for specific cat food brands that specifically cater to your cat’s urinary health. I recommend this Purina Pro Plan one and Nine Lives Cat Food.
  3. Shop for over the counter remedies. There are medicines such as Better Bladder Control and UTI Free. They help to treat your cat’s urinary tract problems and also help to boost the health of your cat’s bladder and urinary tract.
  4. Keep your cat’s litter box clean and help your cat to exercise more. Remember to give your cat bottled water too. This can help because bottled water specifically does not usually have chlorine or fluoride which can cause your cat toxic harm.


There are so many things that might cause the unfortunate occurrence of blood in your cat’s urine. It’s scary to see your cat peeing blood. If you see little splotches of blood around the litter box or on your tile floor, consider the symptoms and take your cat to the vet if you’re unsure. It’s scary, but it doesn’t have to be serious.

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