Skip to content


    Exciting News for WebMD Members!

    We've been busy behind the scenes building new message boards for you. You'll have new and easier ways to find messages, connect with others, and share your stories.

    And, this will all be available on your smartphone or other mobile device!

    What Do You Need to Do?

    The message board you're used to will be closing in the coming weeks. While many of your boards will be making the move to our new home, your posts will not. Want to keep a discussion going? Save posts you want to continue (this includes your member profile story), so that you can re-post them in the new message boards.

    Keep an eye here and on your email inbox, we'll be back in touch soon to give you all the information you need!

    Yours in health,
    WebMD Message Boards Management

    Includes Expert Content
    bright red blood in female cats urine
    melrflock79 posted:
    I have a car who is about 6 yrs old and has had urinating issues for about six months. At the first 5 months she just urinated in inappropriate places. We have her Capri for the recommended 3 days and the problem seemed to improve but did not completely stop the issue. We felt maybe she had been jealous of our new baby in the house but in the past month her urine has been getting worse and is now a bright red and not droplets. I plan to collect her urine for analysis bc she has now has been back on the antibiotics for 8 days and her water intake has increased. I have felt her abdomen and she shows no signs of pain and has had no change in appetite or weight. My question is, if this sounds like a crystal or something more serious like cancer or kidney failure.
    atti_editor responded:
    Hi melrflock79,

    The reasons for blood in your cat's urine could be numerous -- it looks like the most common based on the little research I did is a condition known as FLUTD or a urinary tract infection, but it could also signal something more serious like kidney disease. Here is some information I found on urinary tract diseases in cats . It is important that you get her into the vet so that he/she can determine exactly what is going on and suggest the best course of action. (I am in no way a veterinary professional.)

    I hope that your girl is feeling better! Please keep us updated on her condition.

    Drew Weigner, DVM, ABVP responded:
    This is a great question because, although there may be a behavioral component to her urinating outside her litterbox, it's quite apparent that she has a medical problem. Blood in the urine is indicative (in most cases) of cystitis, which is a generic term for inflammation of the urinary bladder. It doesn't, however, tell you the cause. Common causes include urinary tract infections, bladder or kidney stones, and idiopathic cystitis (or cystitis of unknown cause, often referred to as FLUTD.) Cancer and kidney failure are uncommon causes. It's best to let your veterinarian obtain the urine sample, as the results are much more accurate. She should also have a full blood panel, since she's drinking more, to look for diseases such as kidney disease, diabetes, and thyroid disease.

    Drew Weigner, DVM, ABVP
    The Cat Doctor
    Board Certified in Feline Practice

    Helpful Tips

    Be the first to post a Tip!

    Report Problems With Your Medications to the FDA

    FDAYou are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

    Learn more about the AVMA

    WebMD Special Sections