
Blood
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Typical
Alkalinity
What Can Red Indicate?
Red in your cat's litter may indicate the visible presence of blood, which can signal potential health issues such as urinary tract inflammation or stones. Use this guide to learn more about what this color means and how to take action.
Red = Presence of Blood
If your PrettyLitter turned red, it might suggest the presence of blood in your cat's urine. Blood in cat urine can be associated with a range of potential health issues, such as Feline Lower Urinary Tract Disorder (FLUTD), bladder stones, bladder inflammation, or certain kidney conditions. In rare cases, it could also indicate more serious concerns, like bladder cancer or an internal injury.
If red appears in your cat’s litter box, this means that there is blood in the urine and you should immediately consult a veterinarian. Remember, PrettyLitter detects visible blood levels but may not catch very small traces. Visit our color meaning page to learn more about what different colors can signify.
If red appears in your cat’s litter box, this means that there is blood in the urine and you should immediately consult a veterinarian. Remember, PrettyLitter detects visible blood levels but may not catch very small traces. Visit our color meaning page to learn more about what different colors can signify.
What Does The Presence of Blood Mean?

Red in your cat's litter may indicate the visible presence of blood, which could point to various health issues such as a urinary tract infection or bladder stones. PrettyLitter’s health monitoring formula helps you detect these changes early, giving you a chance to keep a close tab on your cat’s health. By noticing these changes, you can take timely steps and consult your veterinarian to ensure your cat stays healthy.
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Frequently Asked Questions
Daily. To keep your cat comfortable and to get the most out of your litter, you should scoop out the solids and stir the litter daily. As you’re doing their litter box maintenance, take a peek at the color that appears in the litter.
If you see the color change to blue or orange, you should monitor your cat’s litter for the following 48 hours. If blue and orange continue to appear, you should consult your cat’s veterinarian. If red appears in your cat’s litter box, this means that there is blood in the urine and you should immediately consult a veterinarian.
Talk to your veterinarian about how often your cat should visit their office. Visit frequency varies by age and individual conditions. From kittenhood to senior age cats, your veterinarian will have recommendations that may vary between life stages.
It can. Feline urine pH fluctuates over time depending on meal timing, water consumption, and stress, so temporary spikes are not a reason for alarm unless the color shows over several urination cycles.
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