My outdoor cat missed Revolution. Should I test for heartworm or dose?

Question

I forgot to give my cat her revolution a couple of months and she does go outside. Do I take her in to the vet to be tested and do I go ahead and apply the dose now? Pet's info: Cat | Mixed Breed | Female | spayed | 7 months and 15 days old | 5 lbs

Maria DVM · Accepted Answer

She is absolutely a beautiful cat. The gold standard recommendation in cats is to immediately start Revolution and then test for heartworm disease in 6 months. It takes about 6-7 months for heart worm disease to show up positive. Here is the website for the heartworm society. https://www.heartwormsociety.org/heartworms-in-cats The issue comes with cats is it is extremely hard to test for it. The simple blood test that is performed in dogs tests for the heartworm protein. The problem is to get a positive test the animal needs an adult female heartworm in them but in cats it is very unlikely for them to have the adult female. Since Heartworm disease is prevalent in your state I would recommend talking to your veterinarian to see if they would like to test him in 6 months. It is something to consider because of your location. Thank you for using PetCoach.

My outdoor cat missed Revolution. Should I test for heartworm or dose?

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