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PT measures the time it takes for blood to clot via the extrinsic pathway (Factor VII). A normal PT indicates adequate production of clotting factors by the liver and no significant coagulopathy.
A shortened PT can occur with sample handling issues, early clotting activation, or rarely hypercoagulable states. It is not typically a cause for concern unless very abnormal.
No specific action needed. Your vet may repeat the test if there are other signs of a clotting disorder.
Canine PT: 5.5 seconds (Low)PT measures the time it takes for blood to clot via the extrinsic pathway (Factor VII). A normal PT indicates adequate production of clotting factors by the liver and no significant coagulopathy.
No action needed. Clotting function via the extrinsic pathway is normal.
Canine PT: 8.0 secondsA prolonged PT indicates a problem with the extrinsic coagulation pathway. Common causes include Vitamin K deficiency or antagonism (from rodenticide poisoning), noticeable liver disease (where clotting factors are made), or Factor VII deficiency.
This is a significant finding. If your dog has access to rodenticides (rat poison), emergency treatment with Vitamin K1 is needed. Your vet will also check PTT and assess liver function to identify the underlying cause.
Canine PT: 13 seconds (High, Prolonged)Upload your lab report and get your actual values interpreted in plain English — instantly, with no medical training required.