Factor VIII (Haemophilia A)

Factor VIII deficiency may be suspected in young dogs with a history of haemorrhage and in which other causes have been ruled out, and which have an elevated activated partial thromboplastin time (APTT) with normal prothrombin time (PT).




Whole blood


Sodium Citrate

Collection protocol:

Collect blood with a minimum of trauma so the coagulation cascade is not triggered, preferably from the jugular so a good flow is ensured. Fill the tube exactly to the level indicated on the blood tube.

Special handling/shipping requirements:

Deliver to the laboratory as soon as possible. If delivery will be delayed, spin to separate the plasma, and aspirate the plasma into a plastic or additive-free tube. Freeze the plasma, and deliver with ice bricks.