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Why is my dog still testing positive for Giardia after treatment?

Updated On September 23rd, 2025

Pet's info: Dog | French Bulldog | Female | unspayed | 35 lbs

About 2 months ago Jade was diagnosed by the vet with Giardia. The panecur packs don’t seem to be working, we are very clean and sanitize everything daily...but she still seems to be testing positive. Any other tips or advice ? We are trying all we can to rid her of this so she doesn’t infect the other dogs!

1 Answer

Most Helpful Answer

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Answered By Dr. Strydom, DVM

Veterinarian

Published on July 30th, 2019

I suggest you refer to this link about Giarida and how to effectively clean the environment. ( https://vcahospitals.com/know-your-pet/giardia-in-dogs ) Unfortunately, giardia is growing resistant to many common anti-protozoal medications – with the result that increasing numbers of pets can become persistent carriers. I don't know what type of giardia test your vet used but if an ELISA was used, they can show positive for giardia for up to 6 months after treatment because it can take that long for the antigens to be cleared from the animal's bloodstream. So, if she is not showing any clinical signs I would not be overly worried. Just keep the environment as clean as possible and I would also recommend you feed her some canned pumpkin (like 1/8-1/4 cup once or twice a day). Sometimes that extra fiber will help "push" the giardia trophozoites off the intestinal lining. Use pure pumpkin, not the pie filling. Hope this helps. If you have more questions you can always opt for a private consultation where we can chat back and forth. That way you can ask as many questions as you'd like. Best wishes.

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