Bionote’s new Canine Heartworm (CHW) rapid test takes just 5-10 minutes to detect the presence of Canine Dirofilaria immitis antigen. Antigen testing is the most specific method to find heartworm, and veterinarians running the CHW test on symptomatic and asymptomatic dogs can be confident in its proven 94.4 percent sensitivity and 100 percent specificity. Testing can be done in just one easy step and does not require any additional equipment or analyzers.