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Table 1 Diagnostic test results for D. immitis-positive dogs (n = 89) from three different shelters in Texas, USA

From: Probe-based qPCR as an alternative to modified Knott’s test when screening dogs for heartworm (Dirofilaria immitis) infection in combination with antigen detection tests

No. of samples

MK

qPCR

DiroCHEK® pre-ICD

DiroCHEK® post-ICD

54

 + 

 + 

 + 

 + 

1

 + 

 + 

 + 

5

 + 

 + 

 + 

2

 + 

 + 

14

 + 

 + 

1

 + 

12

 + 

  1. MK modified Knott’s test
  2. qPCR real-time PCR
  3. ICD immune complex dissociation