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Does my dog need a heart worm test before starting her on Sentinel, even though she was on Safeguard, but she skipped a month?
I have never heard of safeguard. Do you mean heartguard??? If you are simply changing the type of hearworm preventative you are using then a test is not nessessary. If you skipped one month then don't worry about it. Thanks, vetcarerx vet team