1. Sampling and storing of blood for determination of acid–base status;Andersen;Scandinavian Journal of Clinical Laboratory Investigation,1961
2. Stability of pO2, pCO2 and pH in fresh blood samples stored in a plastic syringe with low heparin in relation to various blood-gas and hematological parameters;Beaulieu;Clinical Biochemistry,1999
3. Recomendation on sampling, transport and storage for the determination of the concentration of ionized calcium in whole blood, plasma and serum;Boink;Annual Biological Clinics,1991
4. Clinical chemistry tests (acid–base imbalance);Carlson,1996
5. Coles, E.H., 1980. Veterinary Clinical Pathology. third ed. London, pp. 15–122