Helping cats and dogs live their healthiest lives.
Sacred Birman kitten stood next to an adult Yorskhire Terrier in black and white.

Curious about your cat's urinary health?

You are her first line of defense. Monitor your cat’s health at home with Royal Canin Hematuria Detection, technology by Blücare—litter granules for detection of blood in feline urine.

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Royal Canin Hematuria Detection, technology by Blücare,
is not a substitute for veterinary diagnosis.

Using your Hematuria Detection sample in 3 easy steps



Spread the crystals over the litter and wait for your cat to urinate.



Inspect the litter box after your cat urinates. If the granules are WHITE or YELLOW, the test is negative. If they turn BLUE, the test is positive, showing the presence of blood in your cat’s urine.


Contact your veterinarian to discuss your cat’s results and what you can do to maintain her health. Or, contact Ask.Vet for your complimentary online consultation anytime, 24/7.

Test results may vary based on conditions of use and other factors such as a cat's diet and medication.
Each test has its limitations, false positives, and false negatives. Accuracy of results is not guaranteed.

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You've performed the test. What's next? 

Whether the crystals turned blue or stayed white, you’ll want to discuss your cat’s results with a veterinarian. Royal Canin has partnered with Ask.Vet to provide you a complimentary online consultation with a licensed, U.S. veterinarian. Through your mobile device or computer, the veterinarian will triage your cat to determine the best next steps you can take for your cat’s health. Use your complimentary Ask.Vet chat anytime, 24/7.

Text CATHD to 67076 OR:

Chat now

Together, we can discover more about your cat's health

Cats tend to hide clinical signs of disease and can often show few or no early signs of illness. The longer a medical condition goes undetected, the more serious the consequences may be. More than 20 conditions can cause blood in the urine1, and many urinary conditions tend to recur after one episode. In fact, approximately 50% of cats that experience one episode of feline lower urinary tract disease (FLUTD) will have a recurrence2.


Now with Hematuria Detection, technology by Blücare, you can detect if there is blood in your cat’s urine easily at home.

Results right at home


  • Test where your cat feels comfortable

  • Easy to add granules to your cat’s existing litter

  • Allows detection of microhematuria, which is blood invisible to the naked eye

  • Clear results within a few seconds of urination that remain visible for 48 hours


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Now see it in action

As curious as a cat?

Here are answers to common questions you may have.

You can spread the granules wherever your cat urinates, even on the carpet. However, you'll need to ensure there are no cleaning solutions present that may affect the test results.

It can be used with most litters available on the market. For best detection results, a clay-based (bentonite) clumping litter should be used.

The cats we tested did not react to the presence of the granules, and there did not seem to be any noticeable smell.

Use one whole packet when spreading into your cat's litter box. Since each package includes two packets, be sure to seal the other packet in the original package to protect it from sunlight. The long shelf life of the product, two years in the sealed packaging, is also beneficial, and the granules remain effective for 30 days when placed on your cat’s litter.

Because the granules can detect even the smallest amount of blood in your cat’s urine, any color change to BLUE means you should consult your veterinarian as soon as possible.

The frequency of monitoring is based on the health of your cat. Talk to your veterinarian about any urinary concerns or behavior changes, and ask whether this home monitoring tool could be helpful when you are concerned.

First, add the granules to your cats' shared litter box. If granules turn BLUE, you'll need to separate your cats so each has their own litter box. You now have two options. You can add granules to each litter box (this will help determine which cat was responsible for the color change). Or, if you suspect which cat needs specific monitoring, add the granules to its litter box only.

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Keep learning

Detailed instructions for use (IFU)

Download IFU


More of your questions, answered

Download FAQ

Health is proactivity at home

REFERENCES: 1. Forrester SD. 2004. 2. Khenifar E. et al, 2018.