Canine Parvovirus (CPV): Diagnosis & Testing
Canine parvovirus (CPV) is a highly contagious enteric infection most commonly detected by antigen testing on a faecal or rectal swab. Quantitative CPV antigen detection supports rapid confirmation of parvovirus enteritis, while CPV antibody testing supports vaccination monitoring. Point-of-care quantitative testing reports viral load rather than a simple positive/negative result.
Fact Table
Clinical Context
Canine parvovirus (CPV) is a highly contagious enteric infection most commonly detected by antigen testing on a faecal or rectal swab. Quantitative CPV antigen detection supports rapid confirmation of parvovirus enteritis, while CPV antibody testing supports vaccination monitoring. Point-of-care quantitative testing reports viral load rather than a simple positive/negative result.
Interpretation should combine the quantitative result with the patient's signalment, history, clinical signs, vaccination or treatment history where relevant, and any other laboratory findings. A single value is rarely diagnostic on its own; serial measurements often provide more useful information.
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2026-09-12
MEDIUM
FAQ
How is canine parvovirus detected?
Parvovirus is most commonly detected by antigen testing on a faecal or rectal swab, which identifies the virus shed in faeces. Antibody testing is used separately to assess vaccination status. Quantitative fluorescence antigen tests report viral load rather than a simple positive/negative.
When should a puppy be tested for CPV?
Test any puppy or unvaccinated dog with acute vomiting, bloody diarrhoea, lethargy, or fever. Early testing is critical because parvovirus is highly contagious and fast-moving; prompt isolation and supportive care significantly improve survival.
How should a CPV sample be collected?
A rectal swab is inserted into the rectum and rotated gently to collect faecal material. The sample is mixed into buffer and applied to the test device. Quantitative tests read the result on an immunofluorescence analyzer within minutes.