Acid-base measurements of arterial, venous and capillary blood in the dog.

A method of arterial blood sampling acceptable for clinical purposes for acid-base estimations in dogs is described. A comparison of acid-base variables from fourteen canine arterial, venous and capillary blood samples revealed in most cases that venous and capillary blood samples showed unsatisfactory agreement with corresponding arterial blood samples. Two commercial automatic pH and blood-gas analysing systems are compared.