Hi, yes it's definately important to have the test done. I know at my vet's office this test also includes testing for Lyme's Disease and also something else. I'm not sure if this is standard now or not but I am so thankful for having the test done because my Trixie tested positive for Lyme's Disease. You get Lyme from a tick bite. I live in Maryland and ticks are so bad here. This disease can really effect our babies if not treated. I have no idea if Lyme is an issue where you live but if it is then this heartworm test should cover it all. Hey, better safe than sorry.