heartgard before test
I took Heidi to the vet for her annual exam/heartworm test, but have not taken my two labs yet. My vet said to go ahead and start the labs on the Heartgard, even though they haven't had the test yet. He had me do that last year too, since I am sometimes a little late bringing them in. My question is if that's ok, then why do we have to have/pay for the test at all? I think our vet is confident that our dogs are on the Heartgard all during heartworm season and that I am diligent (anal) about this.