I keep my dog on interceptor heart worm medicine 12 months out of the year, and I am wondering why I have to have blood work done every year prior to getting another year supply. Also, why do I have to have a flotation (Fecal examination) done every 6 months with the aminal on medication every month?
Some areas in the US have a serious problem with heartworm and no medication is 100%. Interceptor does not kill all intestinal parasites so my quess is that your vet is checking for the worms it does not kill such as tapeworms. vetcare