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My Frenchie has bloody stool, active, but parvo tests conflict?

Updated On September 23rd, 2025

Pet's info: Dog | French Bulldog | Male | unneutered | 7 lbs

Hi! My Frenchie, Gordo, has been having some fairly loose stool with some blood and mucus. I had taken him to the vet and he tested positive for parvo. I wanted a 2nd opinion and I took him to another vet and they ran the same test and he came back negative. He is very active, constantly playing and is eating normally. The second vet had said that he had a large amount of bacteria in him is causing the inflammation causing the bloody stool. In the back of my mind I can't help but worry...

2 Answers

Most Helpful Answer

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Answered By Rebecca, DVM

Veterinarian

Published on July 9th, 2017

As long as he is eating normally and active then medication at home seems like a reasonable treatment plan. Unfortunately our diagnostic tests aren't always 100% and sometimes we get false results. If he begins vomiting, acting sicker or depressed take him back to vet immediately. But from your description it sounds reasonable that Gordo may have bacterial colitis. Follow the vet recomendations on diet and medication and finish out any antibiotics as prescribed.

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    Answered By Mirissa Duncil, DVM

    Veterinarian

    Published on

    Hi there. This is an odd case-it is very strange that a dog not positive would show up negative for parvovirus but can happen (albeit also rarely but slightly less) that a dog is positive but tests negative. Either condition is a cause for worry, so you are not wrong there. Gordo will more than likely need antibiotics, etc if he has not been prescribed these. In my personal opinion- id suggest he get tested again at the same place he tested positive and explain your situation. You may ask to see the test and get an explanation of how that works. It is good that he is still acting normally and eating but I would rather be safe when dealing with such a serious ailment. My best to you and your pup!

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