Blood samples of 329 dogs from an hyperendemic area of the Po Valley were examined for filariasis.At the filter method (policarbonate membrane), taken as reference test, 45.5% were positive (160 to Dirofilaria immitis, 2 to D. repens and 1 to both). These results were compared with those reported at direct smear test, modified Knott's technique and a further modification of Knott's technique. Relative sensitivity values were of 88%, 91% and 92%, respectively. The relative specificity values were 99%, 100% and 100%, respectively. The discordance with the reference test was statistically significant for all the three methods
Diagnosis of canine filariasis: relative sensitivity and specificity of some haematological techniques
MARTINI, MARCO;
1989
Abstract
Blood samples of 329 dogs from an hyperendemic area of the Po Valley were examined for filariasis.At the filter method (policarbonate membrane), taken as reference test, 45.5% were positive (160 to Dirofilaria immitis, 2 to D. repens and 1 to both). These results were compared with those reported at direct smear test, modified Knott's technique and a further modification of Knott's technique. Relative sensitivity values were of 88%, 91% and 92%, respectively. The relative specificity values were 99%, 100% and 100%, respectively. The discordance with the reference test was statistically significant for all the three methods
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