Sensitivity and specificity of Filarochek heartworm antigen test and Dirotect heartworm antibody test for immunodiagnosis of canine dirofilariasis

Ely, M.L.; Courtney, C.H.

Journal of the American Animal Hospital Association 23(4): 367-371


The sensitivity and specificity of the Filarochek heartworm antigen test was compared to that of the Dirotect test for antibodies to Dirofilaria immitis in 106 culled greyhounds and 96 pound dogs whose infection status was determined by Knott's test and confirmed post mortem. The antigen test detected 96% of heartworm-infected dogs and produced only 2% false positives. There was no evidence of false-positive reactions caused by the presence of Dipetalonema reconditum.