Now, your cat’s first line of defense is you

Keep an eye on your cat’s health at home with Royal Canin Hematuria Detection, technology by Blücare – litter granules for detection of blood in feline urine.

Talk to a vet to get the full scoop on how you can help your cat.

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

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What if you could unlock your cat's health secrets?

Cats tend to hide disease symptoms and can show few or no early signs of illness. If a medical condition goes unnoticed, treatment options may be limited or your cat may require expensive long-term care. That’s why your vet may prescribe Royal Canin Hematuria Detection, technology by Blücare – litter granules for detection of blood in your cat’s urine. Most urinary conditions tend to recur after one episode—approximately 50% of cats that experience one episode of feline lower urinary tract disease (FLUTD) will have a recurrence. And more than 20 health concerns can cause blood in your cat's urine.

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.

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.

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

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