A New Habit to Watch Your Cat’s Health! Patent-Pending Cat Urine Health Check Sheet “JIN Nyan Sign” Launches Crowdfunding on CAMPFIRE

JIN Activity Lab, operated by Hayashi Giken Co., Ltd., will launch a crowdfunding campaign for the cat urine health check sheet "JIN Nyan Sign" on CAMPFIRE starting at 8:00 AM on June 15, 2026. The product aims to help owners check their cats' urine in household toilets and create opportunities to notice subtle deviations from the cat’s usual condition.

Development of the easy urine-based health check "JIN Nyan Sign" is in its final stage.

◆CAMPFIRE
　https://camp-fire.jp/projects/953220/view

JIN Nyan Sign, formally named the "Cat Urine Health Check Sheet," is a new check sheet currently under development.

It is designed to enable owners to confirm their cat’s urine in the home toilet and create a chance for the owner to think, "This may be a little different from usual." The technology is currently patent-pending.

Turning "wouldn't it be nice" into reality with experts

Feline kidney disease can progress quietly.

"They look energetic."
"They have an appetite."
"They are spending their days as usual."

Even if a cat appears like that, changes may be occurring inside the body.

Kidney disease in cats can progress silently.

Furthermore, cats often mask symptoms of illness.

Also, with many cats kept indoors, there are cases where they do not visit veterinary clinics as regularly as dogs do.

The reasons behind this are more than simply "it's hard to take them to the clinic."

　・Severe stress from being placed in a carrier.
　・Anxiety about incidental contact with other animals at the clinic.
　・The cat becoming wary of its owner after returning home.
　・The difficulty of rebuilding trust between the cat and owner once it has been damaged.

There are real reasons why owners may not, or cannot, take their pets to the clinic.

Because of these realities, owners sometimes hesitate:

　"They seem a bit off."
　"But I don't know if it's serious enough to go to the vet."
　"I'd rather wait a little than stress them out by taking them to the clinic."

However, during that period of "waiting to see," health changes can quietly progress.

Early detection is important because progressed kidney disease is difficult to reverse

In practice, there are numerous cases where owners waited because visiting was difficult, only to find one day that their cat was listless and, when rushed to the clinic, the kidney disease had progressed to a stage where treatment options were limited.

So owners may regret that their cat developed end-stage kidney disease.

On the other hand, medical care and research related to feline kidney disease are slowly changing.

Research related to the AIM protein and other areas is attracting attention for new possibilities concerning feline kidney disease.

Now that treatment and care options are gradually expanding, we want to also evolve the preceding step: "awareness."

JIN Nyan Sign helps create the trigger to "go to the clinic"

Of course, it is always the veterinarian at the clinic who determines which treatment suits each animal, when to act, and what decisions to make.

JIN Nyan Sign is not a diagnostic tool. It does not determine a diagnosis or perform treatment.

What we aim for is small daily awareness.

For owners, JIN Nyan Sign could become an important new habit for health checks:

　"This is a little concerning."
　"Let's consult a vet once."

We want to create those moments from the household toilet.

Please support the development of this product

JIN Activity Lab has been advancing information dissemination and product development focused on kidney health for dogs and cats.

Hayashi Giken Co., Ltd.'s product using 100% Inutouki, "JIN Power100," has increased its recognition over the past year and a half.

Inutouki was the first subject studied by JIN Activity Lab.

On Rakuten Ichiba, it has ranked first at times alongside major supplements, and through coverage such as the feature in the January 2026 issue of the peer-reviewed journal "New Food Industry," it has been drawing attention from veterinarians and other specialists.

Last year’s CAMPFIRE e-book project "The Cat's Kidney Disease Was Cured" received much support and achieved first place in CAMPFIRE’s overall ranking.

Achieved CAMPFIRE overall ranking #1 in February last year.

This time, JIN Nyan Sign is a new challenge born from that momentum.

This project is not intended simply to sell a completed product.

JIN Nyan Sign is still a product under development, undergoing monitor trials and iterative improvements.

We believe in openly sharing issues that arise during development and nurturing the product together with owners.

In the monitor trial conducted in April 2026, following the initial manual that specified "leave for 3 days," we found cases where unexpectedly large urine volumes remained on the sheet, making correct confirmation difficult.

After that, we revised the manual to "remove immediately after urination," and were able to confirm reactions in some cases, but new issues also became apparent.

One particularly large issue was individual differences in urine volume among cats.

Initially, we observed differences exceeding 100-fold, and even after the manual revision, differences of nearly 30-fold were confirmed.

We learned that cat urine varies greatly between individuals.

What works well in an ideal laboratory environment does not necessarily work easily in actual household environments.

　・Type of cat litter.
　・Volume of urine.
　・Shape of the toilet.
　・Where the urine lands.
　・Timing of use.

Conditions vary completely by household.

That is why, based on real-world field data, we aim to re-test and refine repeatedly to achieve a more user-friendly product.

Also, in multi-cat households, there is the problem of "not knowing which cat produced the urine."

When multiple cats use the same litterbox, simply placing a sheet in the box can make it difficult to determine which cat's urine it is.

Therefore, in this crowdfunding campaign we also offer a "Multi-Cat安心セット" (multi-cat安心 set) as a reward that supports collecting urine and applying it with a dropper.

It requires a little more effort, but it may allow multi-cat households to create opportunities to notice changes in each cat.

We learned that owners with multiple cats find individual management difficult.

Through this crowdfunding campaign, JIN Activity Lab wishes to grow JIN Nyan Sign together with owners who need it.

◆Crowdfunding overview

Project name
　Because it's unfinished, we want to raise it together! Cat Urine Health Check Sheet "JIN Nyan Sign"

Start date/time
　June 15, 2026, 8:00 AM

Platform
　CAMPFIRE

Project URL
　https://camp-fire.jp/projects/953220/view

Crowdfunding page link above

Public period: 6/15–7/31

Funding goal
　300,000 yen

Main rewards

　・JINにゃんサイン超
Keywords: