The Knott’s Technique detects circulating microfilariae and is used for the identification of Dirofilaria immitis microfilariae. It is the only microfilarial test that allows differentiation between Dirofilaria immitis and other filarial parasites such as the non- pathogenic Acanthocheilonema reconditum. It can detect Dirofilaria immitis infected dogs as early as 6 months post infection. Between 66-75% of heartworm-infected dogs can be detected with this test. The Knott’s Technique can also detect microfilariae in cats.

Test Code: KNOTTS

Test Days:Monday to Friday
Turn Around Time (Days):1-3 days

2 ml EDTA whole blood


EDTA blood tube

Handling/ Storage:


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