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Table 3 Results of tests on saline solutions containing excretory/secretory antigens of immature and adult Dirofilaria immitis from a dog pretreated with doxycycline and ivermectin

From: Heat treatment and false-positive heartworm antigen testing in ex vivo parasites and dogs naturally infected by Dirofilaria repens and Angiostrongylus vasorum

Dog

Code

Worm

Gender

SNAP® HTWM

SNAP®

4Dx® Plus

Witness®

Speed Diro™

PetChek®

DiroCHEK®

Young immature adults

 KL

F

0

0

+

+

0

+

 KL

M

0

0

0

0

0

0

Dog treated with doxycycline: 10 mg/kg SID for 1 month and ivermectin 8 μg/kg every 2 weeks for 3 Tx

 M

F

+

0

++

+

+

+

 M

M

+

+

+

+

+

+

 M

M

0

0

+

0

0

+